CVE-2026-93234 (GCVE-0-2026-93234)
Vulnerability from cvelistv5 – Published: 2026-09-24 15:33 – Updated: 2026-09-24 15:33
VLAI
EPSS
VEX
Title
drm/gud: validate TV mode names before creating enum property
Summary
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.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 676f1fb3632bbc9ce83be7938e93fe6bfc9510fd
(git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 06fcaf21c18ac88f57fee3803554f48c6026b95f (git) Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 082e378886547b5b1c4075ed307f7c68547868dc (git) Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 70cffc31a380b3eae45027101647aa94c242aa0e (git) Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 72a95df6bbc7d20c7af1e39d86b3e910cccd01ad (git) Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < eab46d9629807db1b5647d17227e16110a18227f (git) Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < da1ea35fea67ad841f4ada28dd61b41be65e5437 (git) |
guessed | |
| Linux | Linux |
Affected:
5.13
Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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"affected": [
{
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"product": "Linux",
"programFiles": [
"drivers/gpu/drm/gud/gud_connector.c"
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{
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"versionType": "git"
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"status": "affected",
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"versionType": "git"
}
]
},
{
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"product": "Linux",
"programFiles": [
"drivers/gpu/drm/gud/gud_connector.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"lessThan": "5.13",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.221",
"versionStartIncluding": "5.13",
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},
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},
{
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},
{
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},
{
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},
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{
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}
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"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gud: validate TV mode names before creating enum property\n\nThe GUD protocol returns TV mode names as fixed-size\nGUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be\nNUL-terminated.\n\ngud_connector_add_tv_mode() currently passes each fixed-size entry\ndirectly to drm_mode_create_tv_properties_legacy(), which eventually\nreaches drm_property_add_enum() and strlen(). If a device returns an\nentry without a terminating NUL byte, strlen() reads past the end of\nthe slot and can run beyond the allocated buffer, triggering an\nout-of-bounds read.\n\nValidate that each returned TV mode name contains a NUL terminator\nwithin its fixed-size slot before passing it to the DRM property code.\nIf a malformed entry is found, reject the device response with -EIO.\n\nThis fixes the out-of-bounds read without changing the handling of\nvalid devices, and avoids silently truncating malformed protocol data."
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T15:33:31.617Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/676f1fb3632bbc9ce83be7938e93fe6bfc9510fd"
},
{
"url": "https://git.kernel.org/stable/c/06fcaf21c18ac88f57fee3803554f48c6026b95f"
},
{
"url": "https://git.kernel.org/stable/c/082e378886547b5b1c4075ed307f7c68547868dc"
},
{
"url": "https://git.kernel.org/stable/c/70cffc31a380b3eae45027101647aa94c242aa0e"
},
{
"url": "https://git.kernel.org/stable/c/72a95df6bbc7d20c7af1e39d86b3e910cccd01ad"
},
{
"url": "https://git.kernel.org/stable/c/eab46d9629807db1b5647d17227e16110a18227f"
},
{
"url": "https://git.kernel.org/stable/c/da1ea35fea67ad841f4ada28dd61b41be65e5437"
}
],
"title": "drm/gud: validate TV mode names before creating enum property",
"x_generator": {
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}
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"cveId": "CVE-2026-93234",
"datePublished": "2026-09-24T15:33:31.617Z",
"dateReserved": "2026-09-17T16:02:15.095Z",
"dateUpdated": "2026-09-24T15:33:31.617Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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{
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"versionType": "semver"
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{
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{
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{
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}
]
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gud: validate TV mode names before creating enum property\n\nThe GUD protocol returns TV mode names as fixed-size\nGUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be\nNUL-terminated.\n\ngud_connector_add_tv_mode() currently passes each fixed-size entry\ndirectly to drm_mode_create_tv_properties_legacy(), which eventually\nreaches drm_property_add_enum() and strlen(). If a device returns an\nentry without a terminating NUL byte, strlen() reads past the end of\nthe slot and can run beyond the allocated buffer, triggering an\nout-of-bounds read.\n\nValidate that each returned TV mode name contains a NUL terminator\nwithin its fixed-size slot before passing it to the DRM property code.\nIf a malformed entry is found, reject the device response with -EIO.\n\nThis fixes the out-of-bounds read without changing the handling of\nvalid devices, and avoids silently truncating malformed protocol data."
}
],
"id": "CVE-2026-93234",
"lastModified": "2026-09-24T16:17:19.007",
"metrics": {},
"published": "2026-09-24T16:17:19.007",
"references": [
{
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-09-24T23:49:31Z",
"cve": "CVE-2026-93234",
"id": "CVE-2026-93234",
"initial_release_date": "2026-09-24T23:49:31Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-93234",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93234.json",
"version": "2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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