CVE-2026-74676 (GCVE-0-2026-74676)
Vulnerability from cvelistv5
Published
2026-08-22 15:32
Modified
2026-08-25 05:23
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
vt: add permission check for KDSKBMETA ioctl
KDSKBMETA modifies keyboard meta mode but lacks the !perm check that all
other keyboard setter ioctls in vt_k_ioctl() enforce, allowing a process
to change meta mode on a non-controlling console without authorization.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
{
"containers": {
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"programFiles": [
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.12"
},
{
"lessThan": "2.6.12",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.152",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.104",
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},
{
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"status": "unaffected",
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},
{
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"version": "7.1.9",
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},
{
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"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvt: add permission check for KDSKBMETA ioctl\n\nKDSKBMETA modifies keyboard meta mode but lacks the !perm check that all\nother keyboard setter ioctls in vt_k_ioctl() enforce, allowing a process\nto change meta mode on a non-controlling console without authorization."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-25T05:23:18.083Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/9f8cbaf4b774694dcc292e60509762483ebfd9ae"
},
{
"url": "https://git.kernel.org/stable/c/ddc4a8303347114e945b9e6e81b81d77855f7358"
},
{
"url": "https://git.kernel.org/stable/c/1c5b67a1e2cb7d78dab321280f330b056e3bf437"
},
{
"url": "https://git.kernel.org/stable/c/d8ead5083b203d12b8319e7cb29cc6b8836e813f"
},
{
"url": "https://git.kernel.org/stable/c/4671c3b79e337bbae28c2d79023dc642df012bde"
},
{
"url": "https://git.kernel.org/stable/c/a1c31e026c93e378e297a8df8328983d3013a59f"
},
{
"url": "https://git.kernel.org/stable/c/7bf32337a7103ccb686cbd240324bf26225ef2d6"
},
{
"url": "https://git.kernel.org/stable/c/a7ad0034453ba4c353f9b8f810ee2569de33d283"
}
],
"title": "vt: add permission check for KDSKBMETA ioctl",
"x_generator": {
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-74676",
"datePublished": "2026-08-22T15:32:45.256Z",
"dateReserved": "2026-08-15T05:44:03.925Z",
"dateUpdated": "2026-08-25T05:23:18.083Z",
"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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