Most recent entries from all

ALSA-2026:45115 — Important: kernel security update

Affected: AlmaLinux:8: bpftool, AlmaLinux:8: kernel, AlmaLinux:8: kernel-abi-stablelists, AlmaLinux:8: kernel-core, AlmaLinux:8: kernel-cross-headers, AlmaLinux:8: kernel-debug, AlmaLinux:8: kernel-debug-core, AlmaLinux:8: kernel-debug-devel, AlmaLinux:8: kernel-debug-modules, AlmaLinux:8: kernel-debug-modules-extra and 15 more

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026) * kernel: xfrm single-frag length not properly limited * kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059) * kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)

bdu:2026-13941

BELL-CVE-2026-52993

Affected: Alpaquita:23: linux-lts, Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2026-avi-0862 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian LTS. Certaines d'entre elles permettent à…

certfr-2026-avi-0862

EUVD-2026-348124

fkie_cve-2026-52993

In the Linux kernel, the following vulnerability has been resolved:

tipc: fix double-free in tipc_buf_append()

tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a pointer to a local variable which was a copy of the caller's skb pointer.

If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free.

Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.

GHSA-m86q-cgj9-94c8

In the Linux kernel, the following vulnerability has been resolved:

tipc: fix double-free in tipc_buf_append()

If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free.

Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.

msrc_CVE-2026-52993 — tipc: fix double-free in tipc_buf_append()

msrc_CVE-2026-52993

openSUSE-SU-2026:21388-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2026:45116 — Red Hat Security Advisory: kernel-rt security update

kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O kernel: tipc: fix double-free in tipc_buf_append() kernel: dm log: fix out-of-bounds write due to region_count overflow kernel: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available

RLSA-2026:45115 — Important: kernel security update

Affected: Rocky Linux:8: kernel

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026)

* kernel: xfrm single-frag length not properly limited

* kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)

* kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)

SUSE-SU-2026:22742-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2026-52993

Affected: Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:Pro:16.04:LTS: linux-oracle, Ubuntu:Pro:18.04:LTS: linux, Ubuntu:Pro:18.04:LTS: linux-aws, Ubuntu:18.04:LTS: linux-aws-5.0 and 246 more

In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipc_buf_append() tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a pointer to a local variable which was a copy of the caller's skb pointer. If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free. Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.

WID-SEC-W-2026-2077 — Linux Kernel: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen und weitere, nicht näher spezifizierte Auswirkungen zu erzielen.