drm/gud: validate TV mode names before creating enum property
In the Linux kernel, the following vulnerability has been resolved: drm/gud: validate TV mode names before creating enum property The GUD protocol returns TV mode names as fixed-size GUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be NUL-terminated. gud_connector_add_tv_mode() currently passes each fixed-size entry directly to drm_mode_create_tv_properties_legacy(), which eventually reaches drm_property_add_enum() and strlen(). If a device returns an entry without a terminating NUL byte, strlen() reads past the end of the slot and can run beyond the allocated buffer, triggering an out-of-bounds read. Validate that each returned TV mode name contains a NUL terminator within its fixed-size slot before passing it to the DRM property code. If a malformed entry is found, reject the device response with -EIO. This fixes the out-of-bounds read without changing the handling of valid devices, and avoids silently truncating malformed protocol data.
CVE-2026-93234
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93234
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "676f1fb3632bbc9ce83be7938e93fe6bfc9510fd",
"versionType": "git"
},
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "06fcaf21c18ac88f57fee3803554f48c6026b95f",
"versionType": "git"
},
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "082e378886547b5b1c4075ed307f7c68547868dc",
"versionType": "git"
},
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "70cffc31a380b3eae45027101647aa94c242aa0e",
"versionType": "git"
},
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "72a95df6bbc7d20c7af1e39d86b3e910cccd01ad",
"versionType": "git"
},
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "eab46d9629807db1b5647d17227e16110a18227f",
"versionType": "git"
},
{
"status": "affected",
"version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
"lessThan": "da1ea35fea67ad841f4ada28dd61b41be65e5437",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/gud/gud_connector.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/gud/gud_connector.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93234
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37932 · Revision 1
- Added to Heist Feed
- Publisher date