SB20260925134 - Out-of-bounds read in Linux kernel drm gud driver
Published: September 25, 2026
Security Bulletin ID
SB20260925134
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-93234)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 0 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to perform an out-of-bounds read.
The vulnerability exists due to an out-of-bounds read in gud_connector_add_tv_mode() when processing TV mode names returned by a GUD device. An attacker with physical access can provide a device response containing a TV mode name without a NUL terminator to perform an out-of-bounds read.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/06fcaf21c18ac88f57fee3803554f48c6026b95f
- https://git.kernel.org/stable/c/082e378886547b5b1c4075ed307f7c68547868dc
- https://git.kernel.org/stable/c/676f1fb3632bbc9ce83be7938e93fe6bfc9510fd
- https://git.kernel.org/stable/c/70cffc31a380b3eae45027101647aa94c242aa0e
- https://git.kernel.org/stable/c/72a95df6bbc7d20c7af1e39d86b3e910cccd01ad
- https://git.kernel.org/stable/c/da1ea35fea67ad841f4ada28dd61b41be65e5437
- https://git.kernel.org/stable/c/eab46d9629807db1b5647d17227e16110a18227f