CVE-2025-37890
published 2025-05-16CVE-2025-37890: In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc As described in…
PriorityP337high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.17%
6.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
As described in Gerrard's report [1], we have a UAF case when an hfsc class
has a netem child qdisc. The crux of the issue is that hfsc is assuming
that checking for cl->qdisc->q.qlen == 0 guarantees that it hasn't inserted
the class in the vttree or eltree (which is not true for the netem
duplicate case).
This patch checks the n_active class variable to make sure that the code
won't insert the class in the vttree or eltree twice, catering for the
reentrant case.
[1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
Affected
49 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.140-1 (bookworm) | linux 6.1.140-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.140-1 (bookworm) | linux 6.1.140-1 (bookworm) |
| chrome_chrome | — | — | |
| linux | linux | — | — |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 273bbcfa53541cde38b2003ad88a59b770306421 | 273bbcfa53541cde38b2003ad88a59b770306421 |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < e0cf8ee23e1915431f262a7b2dee0c7a7d699af0 | e0cf8ee23e1915431f262a7b2dee0c7a7d699af0 |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < e3e949a39a91d1f829a4890e7dfe9417ac72e4d0 | e3e949a39a91d1f829a4890e7dfe9417ac72e4d0 |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 8df7d37d626430035b413b97cee18396b3450bef | 8df7d37d626430035b413b97cee18396b3450bef |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 6082a87af4c52f58150d40dec1716011d871ac21 | 6082a87af4c52f58150d40dec1716011d871ac21 |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 2e7093c7a8aba5d4f8809f271488e5babe75e202 | 2e7093c7a8aba5d4f8809f271488e5babe75e202 |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < ac39fd4a757584d78ed062d4f6fd913f83bd98b5 | ac39fd4a757584d78ed062d4f6fd913f83bd98b5 |
| linux | linux | >= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 141d34391abbb315d68556b7c67ad97885407547 | 141d34391abbb315d68556b7c67ad97885407547 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.244-1 | 5.10.244-1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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- HID subsystem;
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- I2C subsystem;
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This update corrects flaws in the following subsystems:
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CVE-2025-37890, CVE-2025-38001, CVE-2025-37997, CVE-2025-37932,
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linux, linux-aws, linux-aws-5.4, linux-aws-fips, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5
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linux, linux-aws, linux-aws-5.4, linux-aws-fips, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ACPI drivers;
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
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(CVE-2024-53051, CVE-2024-46787, CVE-2024-50047, CVE-2024-56662,
CVE-2025-37890, CVE-2025-38001, CVE-2025-37997, CVE-2025-37932,
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linux-aws-6.14 vulnerabilities
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[HIGH] linux-aws-6.14 vulnerabilities
linux-aws-6.14 vulnerabilities
Several security issues were discovered in the Linux kernel.
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This update corrects flaws in the following subsystems:
- ARM64 architecture;
- PA-RISC architecture;
- PowerPC architecture;
- S390 architecture;
- x86 architecture;
- Compute Acceleration Framework;
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- Bluetooth drivers;
- ARM SCMI message protocol;
- GPU drivers;
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- IRQ chip drivers;
- Multiple devices driver;
- Network drivers;
- PCI subsystem;
- PTP clock framework;
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- Net
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linux-oracle vulnerabilities
osv·2025-07-21·CVSS 7.8
CVE-2025-38000 [HIGH] linux-oracle vulnerabilities
linux-oracle vulnerabilities
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
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(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
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linux-intel-iotg-5.15 vulnerabilities
osv·2025-07-18·CVSS 8.8
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It was discovered that the CIFS network file system implementation in the
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linux-azure-6.8, linux-azure-nvidia vulnerabilities
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
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(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- S390 architecture;
- Block layer subsystem;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Network block device driver;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- FireWire subsystem;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I3C subsystem;
- InfiniBand drivers;
- IOMMU sub
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linux-aws vulnerabilities
osv·2025-07-17·CVSS 7.8
CVE-2025-38000 [HIGH] linux-aws vulnerabilities
linux-aws vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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(CVE-2025-38001, CVE-2025-37997, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-37890)
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CVE-2025-37890 [MEDIUM] linux-xilinx-zynqmp vulnerabilities
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
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It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DMA engine subsystem;
- DPLL subsystem;
- Qualcomm firmware driv
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linux-azure vulnerabilities
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This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
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CVE-2025-37932)
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37997, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-37890)
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linux-azure vulnerabilities
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Bluetooth drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2025-37918, CVE-2025-37932, CVE-2025-38000,
CVE-2025-37997, CVE-2025-38001)
OSV
linux-ibm vulnerabilities
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CVE-2025-38001 [HIGH] linux-ibm vulnerabilities
linux-ibm vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
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linux-aws-5.15, linux-intel-iot-realtime vulnerabilities
osv·2025-07-03·CVSS 4.7
CVE-2025-37890 [MEDIUM] linux-aws-5.15, linux-intel-iot-realtime vulnerabilities
linux-aws-5.15, linux-intel-iot-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
OSV
linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities
osv·2025-07-02·CVSS 7.8
CVE-2025-38000 [HIGH] linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities
linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
OSV
linux, linux-aws, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oracle, linux-raspi, linux-realtime vulnerabilities
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linux, linux-aws, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oracle, linux-raspi, linux-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37997, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-37890)
OSV
linux-realtime vulnerabilities
osv·2025-07-01·CVSS 4.7
CVE-2025-37890 [MEDIUM] linux-realtime vulnerabilities
linux-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
OSV
linux, linux-aws, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15 vu
osv·2025-07-01·CVSS 4.7
[MEDIUM] linux, linux-aws, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15 vu
linux, linux-aws, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
OSV
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
osv·2025-07-01·CVSS 4.7
CVE-2025-37890 [MEDIUM] linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
OSV
linux-realtime, linux-raspi-realtime vulnerabilities
osv·2025-07-01·CVSS 7.8
CVE-2025-38001 [HIGH] linux-realtime, linux-raspi-realtime vulnerabilities
linux-realtime, linux-raspi-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
OSV
linux, linux-aws, linux-aws-6.8, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oem-6.8, l
osv·2025-07-01·CVSS 7.8
[HIGH] linux, linux-aws, linux-aws-6.8, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oem-6.8, l
linux, linux-aws, linux-aws-6.8, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oem-6.8, linux-oracle, linux-oracle-6.8, linux-raspi vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
OSV
CVE-2025-37890: In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc As des
osv·2025-05-16·CVSS 7.8
CVE-2025-37890 [HIGH] CVE-2025-37890: In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc As des
In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc As described in Gerrard's report [1], we have a UAF case when an hfsc class has a netem child qdisc. The crux of the issue is that hfsc is assuming that checking for cl->qdisc->q.qlen == 0 guarantees that it hasn't inserted the class in the vttree or eltree (which is not true for the netem duplicate case). This patch checks the n_active class variable to make sure that the code won't insert the class in the vttree or eltree twice, catering for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
GHSA
GHSA-fwvg-7877-39cm: In the Linux kernel, the following vulnerability has been resolved:
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
As d
ghsa_unreviewed·2025-05-16
CVE-2025-37890 [HIGH] CWE-416 GHSA-fwvg-7877-39cm: In the Linux kernel, the following vulnerability has been resolved:
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
As d
In the Linux kernel, the following vulnerability has been resolved:
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
As described in Gerrard's report [1], we have a UAF case when an hfsc class
has a netem child qdisc. The crux of the issue is that hfsc is assuming
that checking for cl->qdisc->q.qlen == 0 guarantees that it hasn't inserted
the class in the vttree or eltree (which is not true for the netem
duplicate case).
This patch checks the n_active class variable to make sure that the code
won't insert the class in the vttree or eltree twice, catering for the
reentrant case.
[1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2025-37890
vendor_chrome·2026-02-27·CVSS 7.8
CVE-2025-37890 [HIGH] Long Term Support Channel Update for ChromeOS: CVE-2025-37890
Long Term Support Channel Update for ChromeOS
CVE-2025-37890
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-09-02
CVE-2022-49535 Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PA-RISC architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Arm Firmware Framework for ARMv8-A(FFA);
- ARM SCMI message protocol;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsystem;
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities
vendor_ubuntu·2025-08-22
CVE-2024-46816 Linux kernel (Azure FIPS) vulnerabilities
Title: Linux kernel (Azure FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PA-RISC architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Arm Firmware Framework for ARMv8-A(FFA);
- ARM SCMI message protocol;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsys
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2025-08-05
CVE-2025-23147 Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PA-RISC architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- MCB driver;
-
Ubuntu
Linux kernel (IoT) vulnerabilities
vendor_ubuntu·2025-08-04·CVSS 4.7
CVE-2024-50047 [MEDIUM] Linux kernel (IoT) vulnerabilities
Title: Linux kernel (IoT) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ACPI drivers;
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2024-53051, CVE-2024-46787, CVE-2024-50047, CVE-2024-56662,
CVE-2025-37890, CVE-2025-38001, CVE-2025-37997, CVE-2025-37932,
CVE-2025-37798, CVE-2025-38177, CVE-2025-38000)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number,
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-07-30·CVSS 4.7
CVE-2025-38000 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-29·CVSS 4.7
CVE-2024-53051 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ACPI drivers;
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2024-53051, CVE-2024-46787, CVE-2024-50047, CVE-2024-56662,
CVE-2025-37890, CVE-2025-38001, CVE-2025-37997, CVE-2025-37932,
CVE-2025-37798, CVE-2025-38177, CVE-2025-38000)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2025-07-24·CVSS 7.8
CVE-2025-37933 [HIGH] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- PA-RISC architecture;
- PowerPC architecture;
- S390 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Ublk userspace block driver;
- Bluetooth drivers;
- ARM SCMI message protocol;
- GPU drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- Multiple devices driver;
- Network drivers;
- PCI subsystem;
- PTP clock framework;
- SPI subsystem;
- BTRFS file system;
- SMB network file system;
- eXpress Data Path;
- Universal MIDI packet (UMP) support module;
- Tracing inf
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-07-21·CVSS 7.8
CVE-2025-37997 [HIGH] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.
Ubuntu
Linux kernel (Intel IoTG) vulnerabilities
vendor_ubuntu·2025-07-18·CVSS 8.8
CVE-2025-38009 [HIGH] Linux kernel (Intel IoTG) vulnerabilities
Title: Linux kernel (Intel IoTG) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PA-RISC architecture;
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-07-17·CVSS 7.8
CVE-2025-37798 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manu
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2025-07-17·CVSS 5.9
CVE-2024-57953 [MEDIUM] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- S390 architecture;
- Block layer subsystem;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Network block device driver;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- FireWire subsystem;
- GPIO subsystem;
- GP
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2025-07-17·CVSS 7.8
CVE-2025-37997 [HIGH] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g.
Ubuntu
Linux kernel (Low Latency) vulnerabilities
vendor_ubuntu·2025-07-15·CVSS 7.8
CVE-2025-37798 [HIGH] Linux kernel (Low Latency) vulnerabilities
Title: Linux kernel (Low Latency) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37997, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard ke
Ubuntu
Linux kernel (Xilinx ZynqMP) vulnerabilities
vendor_ubuntu·2025-07-11·CVSS 4.7
CVE-2025-38001 [MEDIUM] Linux kernel (Xilinx ZynqMP) vulnerabilities
Title: Linux kernel (Xilinx ZynqMP) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
r
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-07-08·CVSS 5.9
CVE-2025-22095 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
-
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-08·CVSS 7.8
CVE-2025-37932 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37997, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapacka
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-07-08·CVSS 7.8
CVE-2025-37932 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-08·CVSS 4.7
CVE-2024-53051 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all thi
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-07-08·CVSS 7.8
CVE-2025-37798 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manu
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2025-07-04·CVSS 7.8
CVE-2025-37932 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Bluetooth drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2025-37918, CVE-2025-37932, CVE-2025-38000,
CVE-2025-37997, CVE-2025-38001)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled th
Ubuntu
Linux kernel (IBM) vulnerabilities
vendor_ubuntu·2025-07-04·CVSS 7.8
CVE-2025-37798 [HIGH] Linux kernel (IBM) vulnerabilities
Title: Linux kernel (IBM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manual
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-03·CVSS 4.7
CVE-2025-37932 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all thi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-02·CVSS 7.8
CVE-2025-37932 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Netfilter;
- Network traffic control;
(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,
CVE-2025-37932)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2025-07-01·CVSS 7.8
CVE-2025-37798 [HIGH] Linux kernel (Real-time) vulnerabilities
Title: Linux kernel (Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-01·CVSS 4.7
CVE-2025-37798 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all thi
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2025-07-01·CVSS 4.7
CVE-2025-37798 [MEDIUM] Linux kernel (Real-time) vulnerabilities
Title: Linux kernel (Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reins
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2025-07-01·CVSS 4.7
CVE-2025-37932 [MEDIUM] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Memory management;
- Netfilter;
- Network traffic control;
(CVE-2025-37890, CVE-2024-46787, CVE-2025-37798, CVE-2025-38000,
CVE-2025-37932, CVE-2025-38001, CVE-2025-37997, CVE-2024-50047,
CVE-2024-53051)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-01·CVSS 7.8
CVE-2025-37798 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Netfilter;
- Network traffic control;
(CVE-2025-38001, CVE-2025-37798, CVE-2025-37932, CVE-2025-37997,
CVE-2025-38000, CVE-2025-22088, CVE-2025-37890)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uni
Red Hat
kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
vendor_redhat·2025-05-16·CVSS 7.8
CVE-2025-37890 [HIGH] CWE-416 kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
In the Linux kernel, the following vulnerability has been resolved:
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
As described in Gerrard's report [1], we have a UAF case when an hfsc class
has a netem child qdisc. The crux of the issue is that hfsc is assuming
that checking for cl->qdisc->q.qlen == 0 guarantees that it hasn't inserted
the class in the vttree or eltree (which is not true for the netem
duplicate case).
This patch checks the n_active class variable to make sure that the code
won't insert the class in the vttree or eltree twice, catering for the
reentrant case.
[1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
Microsoft
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
vendor_msrc·2025-05-13·CVSS 7.8
CVE-2025-37890 [HIGH] CWE-416 net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Refe
Debian
CVE-2025-37890: linux - In the Linux kernel, the following vulnerability has been resolved: net_sched: ...
vendor_debian·2025·CVSS 7.8
CVE-2025-37890 [HIGH] CVE-2025-37890: linux - In the Linux kernel, the following vulnerability has been resolved: net_sched: ...
In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc As described in Gerrard's report [1], we have a UAF case when an hfsc class has a netem child qdisc. The crux of the issue is that hfsc is assuming that checking for cl->qdisc->q.qlen == 0 guarantees that it hasn't inserted the class in the vttree or eltree (which is not true for the netem duplicate case). This patch checks the n_active class variable to make sure that the code won't insert the class in the vttree or eltree twice, catering for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
Scope: local
bookworm: resolved (fixed in 6.1.140-1)
bullseye: resolved (fixed in 5.1
Microsoft
Denial of service when handling a request with many HTTP headers in ws
vendor_msrc·2024-06-11·CVSS 7.5
CVE-2024-37890 [HIGH] CWE-476 Denial of service when handling a request with many HTTP headers in ws
Denial of service when handling a request with many HTTP headers in ws
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
GitHub_M: GitHub_M
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Ref
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/141d34391abbb315d68556b7c67ad97885407547https://git.kernel.org/stable/c/273bbcfa53541cde38b2003ad88a59b770306421https://git.kernel.org/stable/c/2e7093c7a8aba5d4f8809f271488e5babe75e202https://git.kernel.org/stable/c/6082a87af4c52f58150d40dec1716011d871ac21https://git.kernel.org/stable/c/8df7d37d626430035b413b97cee18396b3450befhttps://git.kernel.org/stable/c/ac39fd4a757584d78ed062d4f6fd913f83bd98b5https://git.kernel.org/stable/c/e0cf8ee23e1915431f262a7b2dee0c7a7d699af0https://git.kernel.org/stable/c/e3e949a39a91d1f829a4890e7dfe9417ac72e4d0https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
2025-05-16
Published