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...

Astra Linux – Vulnerability found in Linux 6.12, 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 – 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...

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 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

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...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

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...

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...

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"...

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...

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"...

EUVD-2023-54757

Malicious code in bioql PyPI...

The vulnerability in the `net/sched/sch_qfq.c` component of the Linux operating system allows a attacker to compromise data integrity.

The vulnerability in the net/sched/schqfq.c component of the Linux operating system is related to insufficient checking of the status of a shared resource. Exploiting this vulnerability could allow an attacker to compromise the integrity of data...

K000140864: Linux kernel vulnerability CVE-2023-4921

Security Advisory Description A use-after-free vulnerability in the Linux kernel's net/sched: schqfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfqdequeue due to the...

Oracle Linux 6 : kernel (ELSA-2024-1831)

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-1831 advisory. - net/sched: schqfq: account for stab overhead in qfqenqueue CVE-2023-3611 Orabug: 36517546 - net/sched: clsfw: Fix improper refcount update leads to...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...