SB2026032606 - Local denial of service in Linux kernel cs42l43 driver
Published: March 26, 2026
Security Bulletin ID
SB2026032606
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-23387)
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to a use-after-free error within the cs42l43_pin_probe() function in drivers/pinctrl/cirrus/pinctrl-cs42l43.c. A local user can trigger a double-put use-after-free error and crash the OS kernel.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/188ba3468cb7c098c62609d82e9fc58d29ead7f4
- https://git.kernel.org/stable/c/1e0465139fd9caee7ffefe285ef7d5f21919e474
- https://git.kernel.org/stable/c/95b14ecc56881dd9a187e1e84dd0daa88ff22c5d
- https://git.kernel.org/stable/c/ea07fcfbba4301839db3784f09955d9fa3e98090
- https://git.kernel.org/stable/c/fd5bed798f45eb3a178ad527b43ab92705faaf8a