SB2026011434 - Use-after-free in Linux kernel hwmon driver
Published: January 14, 2026
Security Bulletin ID
SB2026011434
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-68789)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ibmpex_high_low_store() and ibmpex_bmc_delete() functions in drivers/hwmon/ibmpex.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/533ead425f8109b02fecc7e72d612b8898ec347a
- https://git.kernel.org/stable/c/5aa2139201667c1f644601e4529c4acd6bf8db5a
- https://git.kernel.org/stable/c/68d62e5bebbd118b763e8bb210d5cf2198ef450c
- https://git.kernel.org/stable/c/6946c726c3f4c36f0f049e6f97e88c510b15f65d
- https://git.kernel.org/stable/c/fa37adcf1d564ef58b9dfb01b6c36d35c5294bad