SB2026091892 - Use-after-free in Linux kernel x86 dell driver
Published: September 18, 2026
Security Bulletin ID
SB2026091892
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-93131)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to access freed memory.
The vulnerability exists due to a use-after-free race condition in the Dell privacy WMI driver when accessing the features_present field without holding the list mutex. A local user can trigger concurrent access to the field while the associated privacy data is freed to access freed memory.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/239ae86b7c97341f49d2ba32037ee3ddbaf0f1ab
- https://git.kernel.org/stable/c/2d2108685a491b369f95774d0a7579d6e5287215
- https://git.kernel.org/stable/c/9f860050c3d17ff8499d3998f7534d306c3da50a
- https://git.kernel.org/stable/c/a22beeb90475b5f71a477564eecf764b24f47277
- https://git.kernel.org/stable/c/ca9338dbc64759b30741b12017c050b33c94dfa2
- https://git.kernel.org/stable/c/ef59ff891adf9bd696917f71f841fdb23c245790
- https://git.kernel.org/stable/c/f3c4532f6dac8fb5504d342e2a15e6353e5eb56e