Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15

A out-of-bounds write vulnerability exists in the Linux kernel’s net/sched:schqfq component, which can be exploited to achieve local privilege escalation. The qfqchangeagg function in net/sched/schqfq.c allows for an out-of-bounds write, as lmax is updated based on packet sizes without any bounds...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass This fix addresses the issue with the qfqchangeclass function. The cl-qdisc and cl fields should only be freed if a new class and qdisc are allocated; otherwise,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fixed a race condition in qfqaggregate. A race condition can occur when qfqchangeagg is modified called during qfqenqueue while other threads access it concurrently. For example, qfqdumpclass may trigger a NULL...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098802)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098802 advisory. In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix race condition on qfqaggregate A race condition can occur when 'agg' is...

CVE-2026-74267: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever codel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog before i...

CVE-2026-64012: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace direct dequeue call with peek and qdiscdequeuepeeked When sfb has children eg qfq qdisc whose peek callback is qdiscpeekdequeued, we could get a kernel panic. When the parent of such qdiscs eg illustrat...

AZL-77133 CVE-2026-22999 affecting package kernel for versions less than 6.6.126.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass Fixes qfqchangeclass error case. cl-qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF...

CVE-2026-22999

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass Fixes qfqchangeclass error case. cl-qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF...

CVE-2026-22999 net/sched: sch_qfq: do not free existing class in qfq_change_class()

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass Fixes qfqchangeclass error case. cl-qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF...

CVE-2026-22999: Use After Free

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass Fixes qfqchangeclass error case. cl-qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF...

SUSE CVE-2026-22976

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix NULL deref when deactivating inactive aggregate in qfqreset qfqclass-leafqdisc-q.qlen 0 does not imply that the class itself is active. Two qfqclass objects may point to the same leafqdisc. This happens whe...

CVE-2026-22976 net/sched: sch_qfq: Fix NULL deref when deactivating inactive aggregate in qfq_reset

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix NULL deref when deactivating inactive aggregate in qfqreset qfqclass-leafqdisc-q.qlen 0 does not imply that the class itself is active. Two qfqclass objects may point to the same leafqdisc. This happens whe...

CVE-2026-22976: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix NULL deref when deactivating inactive aggregate in qfqreset qfqclass-leafqdisc-q.qlen 0 does not imply that the class itself is active. Two qfqclass objects may point to the same leafqdisc. This happens whe...

CVE-2025-40083

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix null-deref in aggdequeue To prevent a potential crash in aggdequeue net/sched/schqfq.c when cl-qdisc-ops-peekcl-qdisc returns NULL, we check the return value before using it, similar to the existing approac...

CVE-2025-40083: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix null-deref in aggdequeue To prevent a potential crash in aggdequeue net/sched/schqfq.c when cl-qdisc-ops-peekcl-qdisc returns NULL, we check the return value before using it, similar to the existing approac...

Security update for the Linux Kernel (Live Patch 29 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-15050055116 fixes one issue. The following security issue was fixed: CVE-2025-38477: net/sched: schqfq: Fix race condition on qfqaggregate bsc1247315. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST...

SUSE SLES15 Security Update : kernel RT (Live Patch 13 for SLE 15 SP6) (SUSE-SU-2025:03473-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2025:03473-1 advisory. This update for the Linux Kernel 6.4.0-1506001044 fixes one issue. The following security issue was fixed: - CVE-2025-38477: net/sched: schqfq: Fix ra...

Security update for kernel-livepatch-MICRO-6-0_Update_9

This update for kernel-livepatch-MICRO-6-0Update9 fixes the following issues: CVE-2025-38477: net/sched: schqfq: Fix race condition on qfqaggregate bsc1247315 Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch"...

Security update for kernel-livepatch-MICRO-6-0_Update_9

This update for kernel-livepatch-MICRO-6-0Update9 fixes the following issues: CVE-2025-38477: net/sched: schqfq: Fix race condition on qfqaggregate bsc1247315 Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch"...

SUSE-SU-2025:20812-1 Security update for kernel-livepatch-MICRO-6-0_Update_9

This update for kernel-livepatch-MICRO-6-0Update9 fixes the following issues: - CVE-2025-38477: net/sched: schqfq: Fix race condition on qfqaggregate bsc1247315...