CVE-2025-38177
published 2025-07-04CVE-2025-38177: In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent either…
PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
5.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
sch_hfsc: make hfsc_qlen_notify() idempotent
hfsc_qlen_notify() is not idempotent either and not friendly
to its callers, like fq_codel_dequeue(). Let's make it idempotent
to ease qdisc_tree_reduce_backlog() callers' life:
1. update_vf() decreases cl->cl_nactive, so we can check whether it is
non-zero before calling it.
2. eltree_remove() always removes RB node cl->el_node, but we can use
RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
Affected
35 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.139-1 (bookworm) | linux 6.1.139-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.139-1 (bookworm) | linux 6.1.139-1 (bookworm) |
| chrome_chrome | — | — | |
| linux | linux | — | — |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < 9a5fd5c2f4d4afdd5e405083ee53e0789ce76956 | 9a5fd5c2f4d4afdd5e405083ee53e0789ce76956 |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < 72c61ffbeeb8c50f6d4d70c65d3283aa1bac57a7 | 72c61ffbeeb8c50f6d4d70c65d3283aa1bac57a7 |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < a5efc95a33bd4fcb879250852828cc58c7862970 | a5efc95a33bd4fcb879250852828cc58c7862970 |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < 0475c85426b18eccdcb7f9fb58d8f8e9c6c58c87 | 0475c85426b18eccdcb7f9fb58d8f8e9c6c58c87 |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < 9030a91235ae4845ec71902c3e0cecfc9ed1f2df | 9030a91235ae4845ec71902c3e0cecfc9ed1f2df |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < d06476714d2819b550e0cc39222347e2c8941c9d | d06476714d2819b550e0cc39222347e2c8941c9d |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < c1175c4ad01dbc9c979d099861fa90a754f72059 | c1175c4ad01dbc9c979d099861fa90a754f72059 |
| linux | linux | >= 959466588aa7f84ccf79ae36a1d89542eaf9aaec < 51eb3b65544c9efd6a1026889ee5fb5aa62da3bb | 51eb3b65544c9efd6a1026889ee5fb5aa62da3bb |
| linux | linux_kernel | < 5.4.297 | 5.4.297 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.244-1 | 5.10.244-1 |
| linux | linux_kernel | >= 0 < 6.1.139-1 | 6.1.139-1 |
| linux | linux_kernel | >= 0 < 6.12.29-1 | 6.12.29-1 |
| linux | linux_kernel | >= 0 < 6.12.29-1 | 6.12.29-1 |
| linux | linux_kernel | >= 0 < 5.4.0-219.239 | 5.4.0-219.239 |
| linux | linux_kernel | >= 5.11 < 5.15.190 | 5.15.190 |
| linux | linux_kernel | >= 5.16 < 6.1.138 | 6.1.138 |
| linux | linux_kernel | >= 5.5 < 5.10.241 | 5.10.241 |
| linux | linux_kernel | >= 6.13 < 6.14.6 | 6.14.6 |
| linux | linux_kernel | >= 6.2 < 6.6.90 | 6.6.90 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_msrc7.5HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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VulDB
Linux Kernel up to 6.1.137/6.6.89/6.12.27/6.14.5 sch_hfsc hfsc_qlen_notify cleanup (EUVD-2025-20019 / Nessus ID 242345)
vuldb·2026-07-31·CVSS 5.5
CVE-2025-38177 [MEDIUM] Linux Kernel up to 6.1.137/6.6.89/6.12.27/6.14.5 sch_hfsc hfsc_qlen_notify cleanup (EUVD-2025-20019 / Nessus ID 242345)
A vulnerability was found in Linux Kernel up to 6.1.137/6.6.89/6.12.27/6.14.5. It has been declared as problematic. Affected by this vulnerability is the function hfsc_qlen_notify of the component sch_hfsc. Executing a manipulation can lead to incomplete cleanup.
This vulnerability appears as CVE-2025-38177. The attacker needs to be present on the local network. There is no available exploit.
It is recommended to upgrade the affected component.
OSV
linux-azure-5.15 vulnerabilities
osv·2025-09-02
linux-azure-5.15 vulnerabilities
linux-azure-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:
- 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;
- IRQ chip drivers;
- MCB driver;
- Multiple devices driver;
- Media drivers;
OSV
linux-azure-fips vulnerabilities
osv·2025-08-22
linux-azure-fips vulnerabilities
linux-azure-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:
- 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;
- IRQ chip drivers;
- MCB driver;
- Multiple devices driver;
- Media drivers;
OSV
linux-raspi vulnerabilities
osv·2025-08-05
linux-raspi vulnerabilities
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:
- 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;
- Multiple devices driver;
- Media drivers;
- Multifunction device drivers;
- PCI Endpoint
OSV
linux-iot vulnerabilities
osv·2025-08-04·CVSS 4.7
CVE-2024-53051 [MEDIUM] linux-iot vulnerabilities
linux-iot 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;
- 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)
OSV
linux-azure, linux-azure-5.4, linux-azure-fips, linux-raspi, linux-raspi-5.4 vulnerabilities
osv·2025-07-29·CVSS 4.7
CVE-2024-53051 [MEDIUM] linux-azure, linux-azure-5.4, linux-azure-fips, linux-raspi, linux-raspi-5.4 vulnerabilities
linux-azure, linux-azure-5.4, linux-azure-fips, linux-raspi, linux-raspi-5.4 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;
- 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)
OSV
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
osv·2025-07-25·CVSS 4.7
[MEDIUM] 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
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;
- 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)
OSV
linux-aws-6.14 vulnerabilities
osv·2025-07-24·CVSS 7.8
[HIGH] linux-aws-6.14 vulnerabilities
linux-aws-6.14 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:
- 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 infrastructure;
- Memory management;
- IPv4 networking;
- IPv6 networking;
- Net
OSV
linux-intel-iotg-5.15 vulnerabilities
osv·2025-07-18·CVSS 8.8
CVE-2024-8805 [HIGH] linux-intel-iotg-5.15 vulnerabilities
linux-intel-iotg-5.15 vulnerabilities
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;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Crypt
OSV
linux-hwe-6.8 vulnerabilities
osv·2025-07-17·CVSS 5.9
CVE-2025-2312 [MEDIUM] linux-hwe-6.8 vulnerabilities
linux-hwe-6.8 vulnerabilities
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;
- GPU drivers;
- HID subsystem;
- I3C subsystem;
- InfiniBand drivers;
- IOMMU sub
OSV
CVE-2025-38177: In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent
osv·2025-07-04·CVSS 5.5
CVE-2025-38177 [MEDIUM] CVE-2025-38177: In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent
In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent either and not friendly to its callers, like fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_reduce_backlog() callers' life: 1. update_vf() decreases cl->cl_nactive, so we can check whether it is non-zero before calling it. 2. eltree_remove() always removes RB node cl->el_node, but we can use RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
GHSA
GHSA-9pjq-r2xc-hgwc: In the Linux kernel, the following vulnerability has been resolved:
sch_hfsc: make hfsc_qlen_notify() idempotent
hfsc_qlen_notify() is not idempoten
ghsa_unreviewed·2025-07-04
CVE-2025-38177 [MEDIUM] CWE-459 GHSA-9pjq-r2xc-hgwc: In the Linux kernel, the following vulnerability has been resolved:
sch_hfsc: make hfsc_qlen_notify() idempotent
hfsc_qlen_notify() is not idempoten
In the Linux kernel, the following vulnerability has been resolved:
sch_hfsc: make hfsc_qlen_notify() idempotent
hfsc_qlen_notify() is not idempotent either and not friendly
to its callers, like fq_codel_dequeue(). Let's make it idempotent
to ease qdisc_tree_reduce_backlog() callers' life:
1. update_vf() decreases cl->cl_nactive, so we can check whether it is
non-zero before calling it.
2. eltree_remove() always removes RB node cl->el_node, but we can use
RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2025-38177
vendor_chrome·2026-02-27·CVSS 5.5
CVE-2025-38177 [MEDIUM] Long Term Support Channel Update for ChromeOS: CVE-2025-38177
Long Term Support Channel Update for ChromeOS
CVE-2025-38177
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 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 (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 (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
Microsoft
sch_hfsc: make hfsc_qlen_notify() idempotent
vendor_msrc·2025-07-08·CVSS 5.5
CVE-2025-38177 [MEDIUM] CWE-459 sch_hfsc: make hfsc_qlen_notify() idempotent
sch_hfsc: make hfsc_qlen_notify() idempotent
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
Red Hat
kernel: sch_hfsc: make hfsc_qlen_notify() idempotent
vendor_redhat·2025-07-04·CVSS 5.5
CVE-2025-38177 [MEDIUM] CWE-459 kernel: sch_hfsc: make hfsc_qlen_notify() idempotent
kernel: sch_hfsc: make hfsc_qlen_notify() idempotent
In the Linux kernel, the following vulnerability has been resolved:
sch_hfsc: make hfsc_qlen_notify() idempotent
hfsc_qlen_notify() is not idempotent either and not friendly
to its callers, like fq_codel_dequeue(). Let's make it idempotent
to ease qdisc_tree_reduce_backlog() callers' life:
1. update_vf() decreases cl->cl_nactive, so we can check whether it is
non-zero before calling it.
2. eltree_remove() always removes RB node cl->el_node, but we can use
RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
Package: kernel (Red Hat Enterprise Linux 10) - Affected
Package: kernel (Red Hat Enterprise Linux 6) - Out of support scope
Package: kernel (Red Hat Enterprise Linux 8) - Affected
Package: kernel-rt (Red Hat Enterprise Linux 8) -
Debian
CVE-2025-38177: linux - In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: m...
vendor_debian·2025·CVSS 5.5
CVE-2025-38177 [MEDIUM] CVE-2025-38177: linux - In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: m...
In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent either and not friendly to its callers, like fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_reduce_backlog() callers' life: 1. update_vf() decreases cl->cl_nactive, so we can check whether it is non-zero before calling it. 2. eltree_remove() always removes RB node cl->el_node, but we can use RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
Scope: local
bookworm: resolved (fixed in 6.1.139-1)
bullseye: resolved (fixed in 5.10.244-1)
forky: resolved (fixed in 6.12.29-1)
sid: resolved (fixed in 6.12.29-1)
trixie: resolved (fixed in 6.12.29-1)
Microsoft
Memory leak in ECDSA DNSSEC verification code
vendor_msrc·2022-09-13·CVSS 7.5
CVE-2022-38177 [HIGH] CWE-401 Memory leak in ECDSA DNSSEC verification code
Memory leak in ECDSA DNSSEC verification code
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
isc: isc
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0475c85426b18eccdcb7f9fb58d8f8e9c6c58c87https://git.kernel.org/stable/c/51eb3b65544c9efd6a1026889ee5fb5aa62da3bbhttps://git.kernel.org/stable/c/72c61ffbeeb8c50f6d4d70c65d3283aa1bac57a7https://git.kernel.org/stable/c/9030a91235ae4845ec71902c3e0cecfc9ed1f2dfhttps://git.kernel.org/stable/c/9a5fd5c2f4d4afdd5e405083ee53e0789ce76956https://git.kernel.org/stable/c/a5efc95a33bd4fcb879250852828cc58c7862970https://git.kernel.org/stable/c/c1175c4ad01dbc9c979d099861fa90a754f72059https://git.kernel.org/stable/c/d06476714d2819b550e0cc39222347e2c8941c9dhttps://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
2025-07-04
Published