kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free UAF vulnerability,...

RockyLinux 9 : kernel (RLSA-2026:54443)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:54443 advisory. kernel: accel/ivpu: Fix signed integer truncation in IPC receive CVE-2026-53202 kernel: net/sched: actapi: use RCU with deferred freeing for action...

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

An update for kernel is now available for Red Hat Enterprise Linux 9. 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 each vulnerability from th...

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

An update for kernel is now available for Red Hat Enterprise Linux 9.6 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...

Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: accel/ivpu: Fix signed integer truncation in IPC receive CVE-2026-53202 kernel: net/sched: actapi: use RCU with deferred freeing for action lifecycle CVE-2026-53264 Bug Fixes and...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: IOMMU: Disable SVA when CONFIGX86 is set The patch series “Fix stale IOTLB entries for kernel address space”, version 7, proposes a fix for a security vulnerability related to IOMMU Shared Virtual Addressing SVA. In an SVA contex...

K000162247: Linux kernel vulnerability CVE-2026-53109

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: powerpc/pgtable-frag: Fix bad page state in ptefragdestroy powerpc uses ptfragrefcount as a reference counter for tracking it's pte and pmd page table fragments. For PTE table, in case of Hash with 6...

net/sched: act_api: use RCU with deferred freeing for action lifecycle

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SUSE CVE-2026-53264

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

CVE-2026-53264

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

UBUNTU-CVE-2026-53264

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

CVE-2026-53264 net/sched: act_api: use RCU with deferred freeing for action lifecycle

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

CVE-2026-53264

CVE-2026-53264 concerns the Linux kernel’s networking scheduler (net/sched) where a race between simultaneous NEWTFILTER and DELFILTER operations can lead to a use-after-free of an action. The provided description and patches state that final freeing of the action was incorrectly performed withou...

CVE-2026-53264 net/sched: act_api: use RCU with deferred freeing for action lifecycle

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

CVE-2026-53264 net/sched: act_api: use RCU with deferred freeing for action lifecycle

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

CVE-2026-53264

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

PT-2026-52359

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the net/sched component when NEWTFILTER and DELFILTER operations are executed concurrently. This occurs because an action can be freed immediately via kfree...

CVE-2026-53109

In the Linux kernel, the following vulnerability has been resolved: powerpc/pgtable-frag: Fix bad page state in ptefragdestroy powerpc uses ptfragrefcount as a reference counter for tracking it's pte and pmd page table fragments. For PTE table, in case of Hash with 64K pagesize, we have 16...

CVE-2026-52910

In the Linux kernel, the following vulnerability has been resolved: bpf: Free reuseport cBPF prog after RCU grace period. Eulgyu Kim reported the splat below with a repro. 0 The repro sets up a UDP reuseport group with a cBPF prog and replaces it with a new one while another thread is sending a U...