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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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

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...

Astra Linux – Vulnerability found in Linux 6.1, 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...

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...

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...

CVE-2026-52910

The CVE-2026-52910 issue is in the Linux kernel where a cBPF reuseport program may be freed immediately when detached from a reuseport group, without waiting for an RCU grace period. This can lead to a use-after-free and potential memory corruption when a concurrent UDP send crosses the fast path...

EUVD-2026-36630

Software installed and run as a non-privileged user may conduct GPU system calls to write to arbitrary freed physical pages. Physical memory allocated and freed, without the deferred free mechanism can lead to those resources being used for read/write by the GPU after the kernel module has freed...

CVE-2026-41158

Software installed and run as a non-privileged user may conduct GPU system calls to write to arbitrary freed physical pages. Physical memory allocated and freed, without the deferred free mechanism can lead to those resources being used for read/write by the GPU after the kernel module has freed...

SUSE CVE-2026-43374

In the Linux kernel, the following vulnerability has been resolved: net: nexthop: fix percpu use-after-free in removenhgrpentry When removing a nexthop from a group, removenhgrpentry publishes the new group via rcuassignpointer then immediately frees the removed entry's percpu stats with...

CentOS 9 : kernel-5.14.0-704.el9

"The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the kernel-5.14.0-704.el9 build changelog. - In the Linux kernel, the following vulnerability has been resolved: iommu: disable SVA when CONFIGX86 is set Patch series Fix stale...

EUVD-2026-28680

In the Linux kernel, the following vulnerability has been resolved: net: nexthop: fix percpu use-after-free in removenhgrpentry When removing a nexthop from a group, removenhgrpentry publishes the new group via rcuassignpointer then immediately frees the removed entry's percpu stats with...

CVE-2026-43374

In the Linux kernel, the following vulnerability has been resolved: net: nexthop: fix percpu use-after-free in removenhgrpentry When removing a nexthop from a group, removenhgrpentry publishes the new group via rcuassignpointer then immediately frees the removed entry's percpu stats with...