CVE-2026-31781 (GCVE-0-2026-31781)
Vulnerability from cvelistv5
Published
2026-05-01 14:15
Modified
2026-05-01 14:15
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/ioc32: stop speculation on the drm_compat_ioctl path
The drm compat ioctl path takes a user controlled pointer, and then
dereferences it into a table of function pointers, the signature method
of spectre problems. Fix this up by calling array_index_nospec() on the
index to the function pointer list.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: 505b5240329b922f21f91d5b5d1e535c805eca6d Version: abc60edcfc87771ff244763d4d19c67766f5dd0f Version: a2a840d6dcae960c2dfdf3fcb1b759e1b7d90663 Version: 00279b505289f7529d9be2e78915d0483ffbd314 Version: d04e6ea0cec9e7d6cba806508f657d2d0dc6cacf Version: 7f3ebea19795eb38438cd3709fabf2afd53cf447 |
||
{
"containers": {
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{
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"product": "Linux",
"programFiles": [
"drivers/gpu/drm/drm_ioc32.c"
],
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"vendor": "Linux",
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{
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},
{
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}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/drm_ioc32.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.20"
},
{
"lessThan": "4.20",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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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/ioc32: stop speculation on the drm_compat_ioctl path\n\nThe drm compat ioctl path takes a user controlled pointer, and then\ndereferences it into a table of function pointers, the signature method\nof spectre problems. Fix this up by calling array_index_nospec() on the\nindex to the function pointer list."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-01T14:15:07.933Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/46a60ee8956ef1975f00455f614761c7ecedc09d"
},
{
"url": "https://git.kernel.org/stable/c/5bb398991f378ef74d90b14a6ea8b61ff96cc03a"
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{
"url": "https://git.kernel.org/stable/c/d59c5d8539662d95887b4564f3f72ad38076a2d5"
},
{
"url": "https://git.kernel.org/stable/c/489f2ef2b908898d01df697dc4fe1476674be640"
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{
"url": "https://git.kernel.org/stable/c/4a41c2b18fc05d30b718d2602cac339eae710b34"
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{
"url": "https://git.kernel.org/stable/c/f0e441be08a2eab10b2d06fccfa267ee599dd6b3"
},
{
"url": "https://git.kernel.org/stable/c/27ef84bba9b9d7b03418c60fbc6069ea0e87b13c"
},
{
"url": "https://git.kernel.org/stable/c/f8995c2df519f382525ca4bc90553ad2ec611067"
}
],
"title": "drm/ioc32: stop speculation on the drm_compat_ioctl path",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31781",
"datePublished": "2026-05-01T14:15:07.933Z",
"dateReserved": "2026-03-09T15:48:24.141Z",
"dateUpdated": "2026-05-01T14:15:07.933Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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