CVE-2025-68214 timers: Fix NULL function pointer race in timer_shutdown_sync()

In the Linux kernel, the following vulnerability has been resolved: timers: Fix NULL function pointer race in timershutdownsync There is a race condition between timershutdownsync and timer expiration that can lead to hitting a WARNON in expiretimers. The issue occurs when timershutdownsync clear...

CVE-2025-68214

Summary (CVE-2025-68214): The Linux kernel timer subsystem had a race between timer_shutdown_sync() and timer_expire() that could trigger a WARN_ON_ONCE when a timer’s function pointer was cleared to NULL while the timer was still running. The root cause: timer_shutdown_sync() could detach the ti...

SUSE-SU-2025:20192-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2023-52927: netfilter: allow exp not to be removed in nfctfindexpectation bsc1239644. - CVE-2024-26708: mptcp: fix inconsistent state on fastopen race...

kernel: tcp: properly terminate timers for kernel sockets

In the Linux kernel, the following vulnerability has been resolved: tcp: properly terminate timers for kernel sockets We had various syzbot reports about tcp timers firing after the corresponding netns has been dismantled. Fortunately Josef Bacik could trigger the issue more often, and could test...

Cisco IOS Software Kernel Timer Vulnerability

A vulnerability in the kernel timers in Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of the affected device. The vulnerability is due to improper management of kernel timers. An attacker could exploit this vulnerability by sending crafted traffic, causing...