Important: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Extended Update 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...

CVE-2023-0047

Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was in a CNA pool that was not assigned to any issues during 2023. Notes: none...

The vulnerability of the kernel/cgroup component of the Linux operating system’s memory management subsystem allows a hacker to cause a service failure.

The vulnerability of the kernel/cgroup component of the Linux operating system’s memory management subsystem is related to memory overflow. Exploiting this vulnerability can allow an attacker to cause a service failure...

PT-2025-13316 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A crash can occur in the Linux kernel during cgroup migration due to linked list corruption in the mm struct-lru gen.list. This happens when lru gen migrate mm is called before lru gen...

PT-2025-54100

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contained a flaw in the block cgroup blk-cgroup subsystem. Specifically, a NULL pointer dereference could occur due to blkg policy data being installed before...

PT-2025-49714

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw related to the handling of request queue quality of service rq qos APIs. Specifically, concurrent access to rq qos without proper synchronization...

GSD-2022-1007707 blk-cgroup: properly pin the parent in blkcg_css_online

blk-cgroup: properly pin the parent in blkcgcssonline This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.10 by commit...

PT-2022-35962 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0.10 Description: The issue is related to the blk-cgroup in the Linux Kernel, where the parent is not properly pinned in blkcg css online. The actual impact and attack plausibility have not yet been proven...

Important: kernel

Issue Overview: A memory overflow vulnerability was found in the Linux kernel's ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highes...

Unbreakable Enterprise kernel security update

4.1.12-124.69.5 - x86/smpboot: check cpuinitializedmask first after returning from schedule Dongli Zhang Orabug: 34798594 4.1.12-124.69.4 - btrfs: Remove BUGON as it is causing kernel to panic Rhythm Mahajan Orabug: 34840579 4.1.12-124.69.3 - btrfs: fix missing return for a non-void function...

Exploit for Improper Input Validation in Imagemagick

Container Escape Exploit This is a container escape exploit t...

kernel: bfq: Make sure bfqg for which we are queueing requests is online

A use-after-free vulnerability exists in the Linux kernel. The Bios queued into the BFQ IO scheduler can be associated with a cgroup that was already offline. This issue may then cause the insertion of this bfqgroup into a service tree. This bfqgroup will get freed as soon as the last associated...

kernel: bfq: Update cgroup information before merging bio

In the Linux kernel, the following vulnerability has been resolved: bfq: Update cgroup information before merging bio When the process is migrated to a different cgroup or in case of writeback just starts submitting bios associated with a different cgroup bfqmergebio can operate with stale cgroup...

kernel: bfq: Avoid merging queues with different parents

In the Linux kernel, the following vulnerability has been resolved: bfq: Avoid merging queues with different parents It can happen that the parent of a bfqq changes between the moment we decide two queues are worth to merge and set bic-stablemergebfqq and the moment bfqsetupmerge is called. This...

kernel: blk-iolatency: Fix inflight count imbalances and IO hangs on offline

In the Linux kernel, the following vulnerability has been resolved: blk-iolatency: Fix inflight count imbalances and IO hangs on offline iolatency needs to track the number of inflight IOs per cgroup. As this tracking can be expensive, it is disabled when no cgroup has iolatency configured for th...

CVE-2022-3931

A flaw was found in Ceph-Rook. An attacker with root capabilities can escape the cgroup isolation and gain access to unauthorized information. This issue impacts confidentiality, integrity, and availability...

Unbreakable Enterprise kernel security update

5.15.0-3.60.5.1 - fs: remove nollseek Jason A. Donenfeld Orabug: 34721465 - vfio: do not set FMODELSEEK flag Jason A. Donenfeld Orabug: 34721465 - dma-buf: remove useless FMODELSEEK flag Jason A. Donenfeld Orabug: 34721465 - fs: do not compare against -llseek Jason A. Donenfeld Orabug: 34721465 -...

GSD-2022-1006512 cgroup: cgroup_get_from_id() must check the looked-up kn is a directory

cgroup: cgroupgetfromid must check the looked-up kn is a directory This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.19.12 by commit...

GSD-2022-1006467 cgroup: cgroup_get_from_id() must check the looked-up kn is a directory

cgroup: cgroupgetfromid must check the looked-up kn is a directory This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0 by commit...

PT-2022-34723 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0 Description: The issue is related to the cgroup get from id function, which fails to check if the looked-up kn is a directory. This problem was introduced in version v5.14 and is fixed in Linux Kernel versi...