CVE-2026-52910

The CVE concerns the Linux kernel: a reuseport cBPF program could be freed without waiting for an RCU grace period, via sk_reuseport_prog_free() when detaching from the setsockopt path. The underlying issue is that bpf_release_orig_filter() and bpf_prog_free() destruct the cBPF program too early,...

kernel: netfilter: nf_tables: release flowtable after rcu grace period on error

A flaw was found in the Linux kernel's netfilter component, specifically within the nftables subsystem. An error in releasing a flowtable after an RCU Read-Copy-Update grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and...

kernel: netfilter: nf_tables: release flowtable after rcu grace period on error

A flaw was found in the Linux kernel's netfilter component, specifically within the nftables subsystem. An error in releasing a flowtable after an RCU Read-Copy-Update grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and...

Critical: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

kernel: netfilter: nf_tables: release flowtable after rcu grace period on error

A flaw was found in the Linux kernel's netfilter component, specifically within the nftables subsystem. An error in releasing a flowtable after an RCU Read-Copy-Update grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and...

UBUNTU-CVE-2026-46106

In the Linux kernel, the following vulnerability has been resolved: eventfs: Hold eventfsmutex and SRCU when remount walks events Commit 340f0c7067a9 "eventfs: Update all the eventfsinodes from the events descriptor" had eventfssetattrs recurse through ei-children on remount. The walk only holds...

kernel: netfilter: nf_tables: release flowtable after rcu grace period on error

A flaw was found in the Linux kernel's netfilter component, specifically within the nftables subsystem. An error in releasing a flowtable after an RCU Read-Copy-Update grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and...

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

In the Linux kernel, the following vulnerabilities have been resolved: mac802154: fixed the issue where key resources were released in mac802154llseckeydel. The mac802154llseckeydel function can free resources associated with a key directly, without following the RCU rules for waiting before the...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: BPF: Support for deferring bpflink deallocation to after RCU grace period For some program types, the “link” is passed as a “context” that can be used by those BPF programs to retrieve additional information. For example, for...

OESA-2026-2311 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Return the correct value in vmwtranslateptr functions Before the referenced fixes these functions used a lookup function that returned a pointer. Thi...

CVE-2026-43376

A flaw was found in ksmbd in the Linux kernel. The oplockinfo structure is immediately freed using kfree without an RCU Read-Copy-Update grace period, even though it can still be accessed by readers. This improper memory deallocation can lead to a use-after-free vulnerability, particularly in the...

EUVD-2026-28682

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43376

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43292

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: prevent RCU stalls in kasanreleasevmallocnode When CONFIGPAGEOWNER is enabled, freeing KASAN shadow pages during vmalloc cleanup triggers expensive stack unwinding that acquires RCU read locks. Processing a large...

CVE-2026-43074

CVE-2026-43074 affects the Linux kernel eventpoll code. The vulnerability arises from ep_free() freeing the eventpoll structure while still in use by another thread, creating a use-after-free (UAF). The fix defers kfree() of the epi->ep struct to an RCU grace period to prevent UAF; multiple so...

CVE-2026-43074

In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, epfree in eventpoll.c will kfree the epi-ep eventpoll struct while it still being used by another concurrent thread. Defer the kfree to an RCU...

Linux Distros Unpatched Vulnerability : CVE-2026-43074

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - eventpoll: defer struct eventpoll free to RCU grace period In certain situations, epfree in eventpoll.c will kfree the epi-ep eventpoll struct while it still...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Ensure that dma-fences comply with safe access rules. The xe mechanism can free some of the data pointed to by the dma-fences it exports. Notably, the “timeline name” can be freed if the user space closes the associated...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed UAF by correcting mismatching of bpfprog/attachment RCU flavors. Uprobes always use bpfprogrunarrayuprobe under tasks-trace-RCU protection. However, it is possible to attach a non-sleepable BPF program to a probe...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed a race condition between bpftimercancelandfree and bpftimercancel. This race condition could lead to a UAF Use-After-Free error involving the timer-timer variable. Here’s the detailed explanation: In bpftimer...