#VU124923 Improper locking in Linux kernel - CVE-2026-23446
Published: April 6, 2026
Vulnerability identifier: #VU124923
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23446
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to improper control of interaction with the power management subsystem in aqc111_suspend when handling a suspend callback. A local attacker can trigger a suspend operation to cause a denial of service.
The issue can lead to a hung task in rpm_resume and block another task holding rtnl_lock, which can lock up the networking stack.
Remediation
Install security update from vendor's repository.
External links
- https://git.kernel.org/stable/c/069c8f5aebe4d5224cf62acc7d4b3486091c658a
- https://git.kernel.org/stable/c/3267bcb744ee8a2feabaa7ab69473f086f67fd71
- https://git.kernel.org/stable/c/4de6a43e8ecf961feabddf0e9d6911081d2ed218
- https://git.kernel.org/stable/c/621f2f43741b51f62d767eb4752fbcefe2526926
- https://git.kernel.org/stable/c/98e8aed64614b0c199d5f0391fbe1a4331cb5773
- https://git.kernel.org/stable/c/d3e32a612c6391ca9b7c183aeec22b4fd24c300c