CVE-2023-52704

freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL

State: Published
Severity: 7.8 High
Published: May 21, 2024
Updated: Aug 5, 2026
Reserved: Mar 7, 2024

Description

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

freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL

Tetsuo-San noted that commit f5d39b020809 ("freezer,sched: Rewrite core freezer logic") broke call_usermodehelper_exec() for the KILLABLE case.

Specifically it was missed that the second, unconditional, wait_for_completion() was not optional and ensures the on-stack completion is unused before going out-of-scope.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	f5d39b020809146cc28e6e73369bf8065e0310aa to before 7f9f6c54da876b3f0bece2b569456ceb96965ed7Affected f5d39b020809146cc28e6e73369bf8065e0310aa to before eedeb787ebb53de5c5dcf7b7b39d01bf1b0f037dAffected
LinuxLinux	6.1Affected before 6.1Not affected 6.1.13 through 6.1.*Not affected 6.2 and laterNot affected

References

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