CVE-2025-38350
published 2025-07-19CVE-2025-38350: In the Linux kernel, the following vulnerability has been resolved: net/sched: Always pass notifications when child class becomes empty Certain classful qdiscs…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.18%
7.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
net/sched: Always pass notifications when child class becomes empty
Certain classful qdiscs may invoke their classes' dequeue handler on an
enqueue operation. This may unexpectedly empty the child qdisc and thus
make an in-flight class passive via qlen_notify(). Most qdiscs do not
expect such behaviour at this point in time and may re-activate the
class eventually anyways which will lead to a use-after-free.
The referenced fix commit attempted to fix this behavior for the HFSC
case by moving the backlog accounting around, though this turned out to
be incomplete since the parent's parent may run into the issue too.
The following reproducer demonstrates this use-after-free:
tc qdisc add dev lo root handle 1: drr
tc filter add dev lo parent 1: basic classid 1:1
tc class add dev lo parent 1: classid 1:1 drr
tc qdisc add dev lo parent 1:1 handle 2: hfsc def 1
tc class add dev lo parent 2: classid 2:1 hfsc rt m1 8 d 1 m2 0
tc qdisc add dev lo parent 2:1 handle 3: netem
tc qdisc add dev lo parent 3:1 handle 4: blackhole
echo 1 | socat -u STDIN UDP4-DATAGRAM:127.0.0.1:8888
tc class delete dev lo classid 1:1
echo 1 | socat -u STDIN UDP4-DATAGRAM:127.0.0.1:8888
Since backlog accounting issues leading to a use-after-frees on stale
class pointers is a recurring pattern at this point, this patch takes
a different approach. Instead of trying to fix the accounting, the patch
ensures that qdisc_tree_reduce_backlog always calls qlen_notify when
the child qdisc is empty. This solves the problem because deletion of
qdiscs always involves a call to qdisc_reset() and / or
qdisc_purge_queue() which ultimately resets its qlen to 0 thus causing
the following qdisc_tree_reduce_backlog() to report to the parent. Note
that this may call qlen_notify on passive classes multiple times. This
is not a problem after the recent patch series that made all the
classful qdiscs qlen_notify() handlers idempotent.
Affected
43 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.147-1 (bookworm) | linux 6.1.147-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.147-1 (bookworm) | linux 6.1.147-1 (bookworm) |
| chrome_chrome | — | — | |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 1034e3310752e8675e313f7271b348914008719a < 3b290923ad2b23596208c1e29520badef4356a43 | 3b290923ad2b23596208c1e29520badef4356a43 |
| linux | linux | >= 3f981138109f63232a5fb7165938d4c945cc1b9d < a44acdd9e84a211989ff4b9b92bf3545d8456ad5 | a44acdd9e84a211989ff4b9b92bf3545d8456ad5 |
| linux | linux | >= 3f981138109f63232a5fb7165938d4c945cc1b9d < 103406b38c600fec1fe375a77b27d87e314aea09 | 103406b38c600fec1fe375a77b27d87e314aea09 |
| linux | linux | >= 49b21795b8e5654a7df3d910a12e1060da4c04cf < a553afd91f55ff39b1e8a1c4989a29394c9e0472 | a553afd91f55ff39b1e8a1c4989a29394c9e0472 |
| linux | linux | >= 5.10.238 < 5.10.240 | 5.10.240 |
| linux | linux | >= 5.15.185 < 5.15.187 | 5.15.187 |
| linux | linux | >= 5.4.294 < 5.4.296 | 5.4.296 |
| linux | linux | >= 6.1.141 < 6.1.144 | 6.1.144 |
| linux | linux | >= 6.12.31 < 6.12.37 | 6.12.37 |
| linux | linux | >= 6.14.9 < 6.15 | 6.15 |
| linux | linux | >= 6.6.93 < 6.6.97 | 6.6.97 |
| linux | linux | >= 89c301e929a0db14ebd94b4d97764ce1d6981653 < e269f29e9395527bc00c213c6b15da04ebb35070 | e269f29e9395527bc00c213c6b15da04ebb35070 |
| linux | linux | >= 93c276942e75de0e5bc91576300d292e968f5a02 < f680a4643c6f71e758d8fe0431a958e9a6a4f59d | f680a4643c6f71e758d8fe0431a958e9a6a4f59d |
| linux | linux | >= f1dde3eb17dc1b8bd07aed00004b1e05fc87a3d4 < 7874c9c132e906a52a187d045995b115973c93fb | 7874c9c132e906a52a187d045995b115973c93fb |
| linux | linux | >= f9f593e34d2fb67644372c8f7b033bdc622ad228 < e9921b57dca05ac5f4fa1fa8e993d4f0ee52e2b7 | e9921b57dca05ac5f4fa1fa8e993d4f0ee52e2b7 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.4HIGH
vendor_ubuntu8.4HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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OSV
linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-intel-iotg-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia,
osv·2025-08-28·CVSS 8.4
[HIGH] linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-intel-iotg-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia,
linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-intel-iotg-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx, linux-oracle, linux-raspi, 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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
OSV
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
osv·2025-08-28·CVSS 8.4
CVE-2024-27407 [HIGH] 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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
GHSA
GHSA-6mr5-83vp-r7m7: In the Linux kernel, the following vulnerability has been resolved:
net/sched: Always pass notifications when child class becomes empty
Certain clas
ghsa_unreviewed·2025-07-19
CVE-2025-38350 [HIGH] CWE-416 GHSA-6mr5-83vp-r7m7: In the Linux kernel, the following vulnerability has been resolved:
net/sched: Always pass notifications when child class becomes empty
Certain clas
In the Linux kernel, the following vulnerability has been resolved:
net/sched: Always pass notifications when child class becomes empty
Certain classful qdiscs may invoke their classes' dequeue handler on an
enqueue operation. This may unexpectedly empty the child qdisc and thus
make an in-flight class passive via qlen_notify(). Most qdiscs do not
expect such behaviour at this point in time and may re-activate the
class eventually anyways which will lead to a use-after-free.
The referenced fix commit attempted to fix this behavior for the HFSC
case by moving the backlog accounting around, though this turned out to
be incomplete since the parent's parent may run into the issue too.
The following reproducer demonstrates this use-after-free:
tc qdisc add dev lo root handle 1: drr
tc filte
OSV
CVE-2025-38350: In the Linux kernel, the following vulnerability has been resolved: net/sched: Always pass notifications when child class becomes empty Certain classf
osv·2025-07-19·CVSS 7.8
CVE-2025-38350 [HIGH] CVE-2025-38350: In the Linux kernel, the following vulnerability has been resolved: net/sched: Always pass notifications when child class becomes empty Certain classf
In the Linux kernel, the following vulnerability has been resolved: net/sched: Always pass notifications when child class becomes empty Certain classful qdiscs may invoke their classes' dequeue handler on an enqueue operation. This may unexpectedly empty the child qdisc and thus make an in-flight class passive via qlen_notify(). Most qdiscs do not expect such behaviour at this point in time and may re-activate the class eventually anyways which will lead to a use-after-free. The referenced fix commit attempted to fix this behavior for the HFSC case by moving the backlog accounting around, though this turned out to be incomplete since the parent's parent may run into the issue too. The following reproducer demonstrates this use-after-free: tc qdisc add dev lo root handle 1: drr tc filter ad
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2025-38350
vendor_chrome·2026-02-27·CVSS 7.8
CVE-2025-38350 [HIGH] Long Term Support Channel Update for ChromeOS: CVE-2025-38350
Long Term Support Channel Update for ChromeOS
CVE-2025-38350
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-11-19·CVSS 5.5
CVE-2023-52650 [MEDIUM] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
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:
- DMA engine subsystem;
- GPU drivers;
- HSI subsystem;
- Media drivers;
- Ethernet team driver;
- SPI subsystem;
- USB core drivers;
- Framebuf
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities
vendor_ubuntu·2025-10-21·CVSS 7.8
CVE-2025-37752 [HIGH] 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:
- Network drivers;
- Device tree and open firmware driver;
- SCSI subsystem;
- TTY drivers;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Bluetooth subsystem;
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-38350, CVE-2024-57996, CVE-2025-37752, CVE-2025-38617,
CVE-2025-38477, CVE-2025-38083, CVE-2024-38541, CVE-2023-52757,
CVE-2023-52975, CVE-2025-38618, CVE-2024-49950, CVE-2024-50073,
CVE-2025-37785, CVE-2025-21796, CVE
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-10-21·CVSS 7.8
CVE-2023-52975 [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:
- Device tree and open firmware driver;
- SCSI subsystem;
- TTY drivers;
- SMB network file system;
- Bluetooth subsystem;
- Network traffic control;
(CVE-2025-38350, CVE-2023-52975, CVE-2024-50073, CVE-2024-57996,
CVE-2024-49950, CVE-2024-38541, CVE-2025-37752, CVE-2023-52757,
CVE-2025-38083, CVE-2025-37797)
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 n
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-10-13·CVSS 7.8
CVE-2025-38618 [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:
- Network drivers;
- Device tree and open firmware driver;
- SCSI subsystem;
- TTY drivers;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Bluetooth subsystem;
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-38350, CVE-2024-57996, CVE-2025-37752, CVE-2025-38617,
CVE-2025-38477, CVE-2025-38083, CVE-2024-38541, CVE-2023-52757,
CVE-2023-52975, CVE-2025-38618, CVE-2024-49950, CVE-2024-50073,
CVE-2025-37785, CVE-2025-21796, CVE-2025
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-10-13·CVSS 5.5
CVE-2025-38350 [MEDIUM] 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:
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-37785, CVE-2025-38618, CVE-2025-38617, CVE-2024-57996,
CVE-2025-37752, CVE-2025-38477, CVE-2025-21796, CVE-2025-38350)
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 recompi
Ubuntu
Linux kernel (Azure, N-Series) vulnerabilities
vendor_ubuntu·2025-10-08·CVSS 5.5
CVE-2025-21891 [MEDIUM] Linux kernel (Azure, N-Series) vulnerabilities
Title: Linux kernel (Azure, N-Series) 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:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS sub
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-10-02·CVSS 5.5
CVE-2025-21941 [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:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
-
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-09-25
CVE-2025-38203 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:
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- Network block device driver;
- Bus devices;
- Clock framework and drivers;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EDAC drivers;
- GPU drivers;
- HID subsystem;
- InfiniBand drivers;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- VMware VMCI Driver;
- MMC subsystem;
- MTD blo
Ubuntu
Linux kernel (IBM) vulnerabilities
vendor_ubuntu·2025-09-25·CVSS 5.5
CVE-2025-21981 [MEDIUM] 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:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- US
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-09-24
CVE-2025-38082 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:
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- Android drivers;
- Bluetooth drivers;
- Bus devices;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EDAC drivers;
- Arm Firmware Framework for ARMv8-A(FFA);
- FPGA Framework;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring drivers;
- HW tracing;
- InfiniBand drivers;
- IOMMU
Ubuntu
Linux kernel (AWS FIPS) vulnerabilities
vendor_ubuntu·2025-09-24·CVSS 5.5
CVE-2025-37752 [MEDIUM] Linux kernel (AWS FIPS) vulnerabilities
Title: Linux kernel (AWS 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:
- Media drivers;
- SPI subsystem;
- USB core drivers;
- NILFS2 file system;
- IPv6 networking;
- Network traffic control;
(CVE-2025-38350, CVE-2024-47685, CVE-2024-57996, CVE-2024-53130,
CVE-2025-37752, CVE-2023-52477, CVE-2024-53131, CVE-2024-50202,
CVE-2024-27074, CVE-2024-50051)
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 r
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-09-18·CVSS 8.4
CVE-2024-27407 [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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
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 vulnerability
vendor_ubuntu·2025-09-17·CVSS 7.8
CVE-2025-38350 [HIGH] Linux kernel vulnerability
Title: Linux kernel vulnerability
Summary: A security issue was fixed in the Linux kernel.
A security issues was discovered in the Linux kernel.
An attacker could possibly use this to compromise the system.
This update corrects flaws in the following subsystem:
- Network traffic control;
(CVE-2025-38350)
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-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade wil
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-09-17·CVSS 5.5
CVE-2024-53130 [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:
- Media drivers;
- SPI subsystem;
- USB core drivers;
- NILFS2 file system;
- IPv6 networking;
- Network traffic control;
(CVE-2024-53130, CVE-2025-38350, CVE-2024-50202, CVE-2024-47685,
CVE-2025-37752, CVE-2024-50051, CVE-2024-57996, CVE-2023-52477,
CVE-2024-27074, CVE-2024-53131)
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
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-09-17·CVSS 5.5
CVE-2025-37752 [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:
- Network traffic control;
(CVE-2025-38350, CVE-2025-37752, CVE-2024-57996)
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-generic, linux-generic-lts-RELEASE, linux-vir
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2025-09-17·CVSS 5.5
CVE-2025-37752 [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:
- Network traffic control;
(CVE-2025-38350, CVE-2025-37752, CVE-2024-57996)
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-generic, linux-generic-lts-RELEASE, li
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2025-09-17·CVSS 5.5
CVE-2024-53130 [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:
- Media drivers;
- SPI subsystem;
- USB core drivers;
- NILFS2 file system;
- IPv6 networking;
- Network traffic control;
(CVE-2024-53130, CVE-2025-38350, CVE-2024-50202, CVE-2024-47685,
CVE-2025-37752, CVE-2024-50051, CVE-2024-57996, CVE-2023-52477,
CVE-2024-27074, CVE-2024-53131)
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 requi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-09-02·CVSS 5.5
CVE-2025-37752 [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:
- Overlay file system;
- Network traffic control;
(CVE-2025-21887, CVE-2024-57996, CVE-2025-38350, CVE-2025-37752)
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-generi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-09-02·CVSS 8.4
CVE-2024-57996 [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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
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-generic,
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2025-08-28·CVSS 8.4
CVE-2024-57996 [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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
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. li
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-08-28·CVSS 5.5
CVE-2024-57996 [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:
- Overlay file system;
- Network traffic control;
(CVE-2025-21887, CVE-2024-57996, CVE-2025-38350, CVE-2025-37752)
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-generi
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2025-08-28·CVSS 5.5
CVE-2025-38174 [MEDIUM] 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:
- Thunderbolt and USB4 drivers;
- Network traffic control;
(CVE-2025-38350, CVE-2025-38174)
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-generic, linux-generic-
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2025-08-28·CVSS 5.5
CVE-2025-37752 [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:
- Overlay file system;
- Network traffic control;
(CVE-2025-21887, CVE-2024-57996, CVE-2025-38350, CVE-2025-37752)
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 (FIPS) vulnerabilities
vendor_ubuntu·2025-08-28·CVSS 8.4
CVE-2024-57996 [HIGH] 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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
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-g
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-08-28·CVSS 8.4
CVE-2025-37752 [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:
- NTFS3 file system;
- Network traffic control;
(CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350)
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-generic,
Red Hat
kernel: net/sched: Always pass notifications when child class becomes empty
vendor_redhat·2025-07-19·CVSS 7.8
CVE-2025-38350 [HIGH] CWE-416 kernel: net/sched: Always pass notifications when child class becomes empty
kernel: net/sched: Always pass notifications when child class becomes empty
In the Linux kernel, the following vulnerability has been resolved:
net/sched: Always pass notifications when child class becomes empty
Certain classful qdiscs may invoke their classes' dequeue handler on an
enqueue operation. This may unexpectedly empty the child qdisc and thus
make an in-flight class passive via qlen_notify(). Most qdiscs do not
expect such behaviour at this point in time and may re-activate the
class eventually anyways which will lead to a use-after-free.
The referenced fix commit attempted to fix this behavior for the HFSC
case by moving the backlog accounting around, though this turned out to
be incomplete since the parent's parent may run into the issue too.
The following reproducer demonstr
Microsoft
net/sched: Always pass notifications when child class becomes empty
vendor_msrc·2025-07-08·CVSS 7.8
CVE-2025-38350 [HIGH] CWE-416 net/sched: Always pass notifications when child class becomes empty
net/sched: Always pass notifications when child class becomes empty
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade
Debian
CVE-2025-38350: linux - In the Linux kernel, the following vulnerability has been resolved: net/sched: ...
vendor_debian·2025·CVSS 7.8
CVE-2025-38350 [HIGH] CVE-2025-38350: 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: Always pass notifications when child class becomes empty Certain classful qdiscs may invoke their classes' dequeue handler on an enqueue operation. This may unexpectedly empty the child qdisc and thus make an in-flight class passive via qlen_notify(). Most qdiscs do not expect such behaviour at this point in time and may re-activate the class eventually anyways which will lead to a use-after-free. The referenced fix commit attempted to fix this behavior for the HFSC case by moving the backlog accounting around, though this turned out to be incomplete since the parent's parent may run into the issue too. The following reproducer demonstrates this use-after-free: tc qdisc add dev lo root handle 1: drr tc filter ad
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/103406b38c600fec1fe375a77b27d87e314aea09https://git.kernel.org/stable/c/3b290923ad2b23596208c1e29520badef4356a43https://git.kernel.org/stable/c/7874c9c132e906a52a187d045995b115973c93fbhttps://git.kernel.org/stable/c/a44acdd9e84a211989ff4b9b92bf3545d8456ad5https://git.kernel.org/stable/c/a553afd91f55ff39b1e8a1c4989a29394c9e0472https://git.kernel.org/stable/c/e269f29e9395527bc00c213c6b15da04ebb35070https://git.kernel.org/stable/c/e9921b57dca05ac5f4fa1fa8e993d4f0ee52e2b7https://git.kernel.org/stable/c/f680a4643c6f71e758d8fe0431a958e9a6a4f59dhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-089022.html
2025-07-19
Published