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vuln-cve/data/2026/74xxx/CVE-2026-74566.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-74566",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-08-15T05:44:03.917Z",
"datePublished": "2026-08-15T12:28:07.628Z",
"dateUpdated": "2026-11-06T17:05:48.395Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-19T16:39:06.890Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: make keyring key-chunk byte order agree with keyring_diff_objects()\n\nkeyring_get_key_chunk() loads description bytes into the index chunk low\naddress first, while keyring_diff_objects() numbers the first differing\nbit from the low end and folds the absolute byte index into the level\nwithout removing the inline-prefix offset the level already carries.\nThe two disagree on byte order and bit position, so the array can be\ntold two keys first differ at a bit that does not differ in the chunk\nthe walker uses, letting crafted descriptions collide into one node.\n\nLoad the chunk in the order keyring_diff_objects() assumes and drop the\ninline-prefix length when folding the byte index into the level. This\nonly changes the in-memory ordering used to place keys within a keyring;\nadd, search and read of non-colliding keys are unaffected."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"security/keys/keyring.c"
],
"versions": [
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "414bcf37d81ce9b3823aabc06b04c97fdcbe489b",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "abe43c661efb753d5ee35ad8ace4bbb16fa9afd0",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "f81920917074e3c4ad4fba06fe8c56738d010606",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "bd0f976ef89dce6db458bf75bc2cf51127becc41",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "7269df3e7fcfa308e6a456305162f7788747bdbd",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "3d9f16c0b643ceac305526b2e2fe25c2c6166926",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "7e5397a3fed0dee7779bd084bec3c0584db3c930",
"status": "affected",
"versionType": "git"
},
{
"version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
"lessThan": "58565eef0f8d861aae92abfb7658458d661cee17",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"security/keys/keyring.c"
],
"versions": [
{
"version": "5.3",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.3",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.265",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.216",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.183",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.151",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.103",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.44",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.8",
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "5.10.265"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "5.15.216"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "6.1.183"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "6.6.151"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "6.12.103"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "6.18.44"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "7.1.8"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.3",
"versionEndExcluding": "7.2"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/414bcf37d81ce9b3823aabc06b04c97fdcbe489b"
},
{
"url": "https://git.kernel.org/stable/c/abe43c661efb753d5ee35ad8ace4bbb16fa9afd0"
},
{
"url": "https://git.kernel.org/stable/c/f81920917074e3c4ad4fba06fe8c56738d010606"
},
{
"url": "https://git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41"
},
{
"url": "https://git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd"
},
{
"url": "https://git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926"
},
{
"url": "https://git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930"
},
{
"url": "https://git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17"
}
],
"title": "keys: make keyring key-chunk byte order agree with keyring_diff_objects()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-74566",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T16:59:38.524591Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T17:05:48.395Z"
}
}
]
}
}