Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-53291
Published: June 29, 2026
Vulnerability identifier: #VU135752
CSH Severity: Low
CVSS v4.0: 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-2026-53291
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper exception handling in cx_probe() in the ALSA hda/conexant driver when enabling the jack detection callback. A local user can trigger the vulnerable driver path to cause a denial of service.
The issue can lead to a kernel crash when jack events are later handled after callback registration fails.
How to mitigate CVE-2026-53291
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/1da5c73f3793b224696617a2a21def7500ba18d6
- https://git.kernel.org/stable/c/49c2c5924552e1d2f8b635dee663abebbb7cf63b
- https://git.kernel.org/stable/c/a2a33e87a2ffce3046c574d24eec4390c27c9365
- https://git.kernel.org/stable/c/b0e2333a231107adedd38c6fcfe1adc6162716fc
- https://git.kernel.org/stable/c/d68f753d89f4ef6e410d7e8b7e8ab2fdde921b80
- https://git.kernel.org/stable/c/dd110cc00cf854a8ecd8d003127a4178c28574ea
- https://git.kernel.org/stable/c/f837c7b85143a7c54140ff41ad5c076b73cd9933