CVE-2026-64370

Description

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path In do_cpu_nanosleep(), posix_cpu_timer_create() takes a pid reference via get_pid() and stores it in timer.it.cpu.pid. If the subsequent posix_cpu_timer_set() call fails, the function returns immediately without calling posix_cpu_timer_del() to release the pid reference, causing a leak. Fix it by calling posix_cpu_timer_del() before the unlock-and-return on the error path, consistent with the other exit paths in the same function.

References

• https://git.kernel.org/stable/c/7776f9226e99eb49d97492b0b445027cfcb189da
• https://git.kernel.org/stable/c/87bd2ad568e15b90d5f7d4bcd70342d05dad649c
• https://git.kernel.org/stable/c/8a270b1258797f61b61da44f8bfd41a581b5c85b
• https://git.kernel.org/stable/c/8f06363446c5d043c9a7c008b250040e9de98cf9
• https://git.kernel.org/stable/c/afed3cdc1cca133f804fcf57ff228974f424b23a