CVE-2026-64370

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < afed3cdc1cca133f804fcf57ff228974f424b23aaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8a270b1258797f61b61da44f8bfd41a581b5c85baffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d605d00085adc3fddf67de01dc2a44aebf1a3fb5affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e5ffc638faf5dc7d9dc85c9a95e10bf97442e0c0affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eb4cec29a78334d09bcfb41c0660cdd62ba05843affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7776f9226e99eb49d97492b0b445027cfcb189daaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8f06363446c5d043c9a7c008b250040e9de98cf9affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 87bd2ad568e15b90d5f7d4bcd70342d05dad649caffected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References