Exploitation evidence
Not listed in the latest downloaded CISA KEV catalog. This does not establish an absence of exploitation.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Linux / Linux
Default status: unaffected
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < 9ebe824d55983c9f063a2c9ef1a08b29812d406f (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < e108b22999edbc6f431466baf6b2016c19b7ed31 (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < 9f084ef0beb68091e96ab96f0e95579aac8a77f9 (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < 8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9 (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < 13fc051269d670810d9e314061b61c6dd06116a0 (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < 61ac0585d9f4344d3dfb84b5edff1fee7d532897 (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < 84f7c699f8d139f743c7dc11ef41d085690955bb (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < a113eba06bd1183c614d7994864d6e7054140cb9 (git)
- affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 to < de891c73c1cf41ac8de12c07fa2c84d6a912ad0c (git)
Linux / Linux
Default status: affected
- affected: 3.13
- unaffected: 0 to < 3.13 (semver)
- unaffected: 5.10.273 to ≤ 5.10.* (semver)
- unaffected: 5.15.224 to ≤ 5.15.* (semver)
- unaffected: 6.1.191 to ≤ 6.1.* (semver)
- unaffected: 6.6.161 to ≤ 6.6.* (semver)
- unaffected: 6.12.115 to ≤ 6.12.* (semver)
- unaffected: 6.18.60 to ≤ 6.18.* (semver)
- unaffected: 7.2.14 to ≤ 7.2.* (semver)
- unaffected: 7.3.1 to ≤ 7.3.* (semver)
- unaffected: 7.4-rc1 to ≤ * (original_commit_for_fix)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://git.kernel.org/stable/c/9ebe824d55983c9f063a2c9ef1a08b29812d406f
- https://git.kernel.org/stable/c/e108b22999edbc6f431466baf6b2016c19b7ed31
- https://git.kernel.org/stable/c/9f084ef0beb68091e96ab96f0e95579aac8a77f9
- https://git.kernel.org/stable/c/8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9
- https://git.kernel.org/stable/c/13fc051269d670810d9e314061b61c6dd06116a0
- https://git.kernel.org/stable/c/61ac0585d9f4344d3dfb84b5edff1fee7d532897
- https://git.kernel.org/stable/c/84f7c699f8d139f743c7dc11ef41d085690955bb
- https://git.kernel.org/stable/c/a113eba06bd1183c614d7994864d6e7054140cb9
- https://git.kernel.org/stable/c/de891c73c1cf41ac8de12c07fa2c84d6a912ad0c
Monitored source mentions
Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.00182,
"percentile": 0.07894
}11 Nov 2026, 12:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.00182,
"percentile": 0.07879
}11 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"include/linux/key-type.h",
"include/linux/key.h",
"security/keys/keyring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "9ebe824d55983c9f063a2c9ef1a08b29812d406f",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "e108b22999edbc6f431466baf6b2016c19b7ed31",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "9f084ef0beb68091e96ab96f0e95579aac8a77f9",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "13fc051269d670810d9e314061b61c6dd06116a0",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "61ac0585d9f4344d3dfb84b5edff1fee7d532897",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "84f7c699f8d139f743c7dc11ef41d085690955bb",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "a113eba06bd1183c614d7994864d6e7054140cb9",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
},
{
"lessThan": "de891c73c1cf41ac8de12c07fa2c84d6a912ad0c",
"status": "affected",
"version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"include/linux/key-type.h",
"include/linux/key.h",
"security/keys/keyring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.13"
},
{
"lessThan": "3.13",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.273",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.224",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.191",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.115",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.60",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.3.*",
"status": "unaffected",
"version": "7.3.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.4-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.273",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.224",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.191",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.161",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.115",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.60",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.14",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3.1",
"versionStartIncluding": "3.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.4-rc1",
"versionStartIncluding": "3.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: make keyring indexes independent of kernel addresses\n\nKEYCTL_READ returns the serial numbers in a keyring in associative-array\ntraversal order. The first word of the index is a public, deterministic\nhash of the type pointer, domain pointer and description. An unprivileged\nuser can therefore insert keys with known descriptions, predict their\norder for each possible KASLR slide, and recover the kernel image address.\nOn an x86-64 build with 16 MiB alignment, 45 user keys suffice to\ndistinguish the candidate slides.\n\nRemove the addresses from the whole index, not just its first hash word.\nAssign each key type and domain a nonzero 64-bit ID and hash those IDs and\nthe description with a once-initialized SipHash key. Use the full IDs in\nthe later index chunks as well. Truncating or hashing the IDs there would\nlose the guarantee that distinct type/domain/description tuples have a\ndiffering index bit.\n\nAllocate IDs lazily since private key types need not be registered. Cache\nthem in the index key so tree walks and copies of an existing index do not\nneed to dereference a type descriptor that may have been unregistered.\nKeep the 32-bit chunk layout and diff_objects() bit offsets consistent,\nand retain the separate root slot for keyrings used by recursive search.\nThe key comparison, permissions and userspace data format are unchanged;\nonly the address-dependent in-memory ordering is replaced."
}
],
"providerMetadata": {
"dateUpdated": "2026-11-03T19:12:57.119Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/9ebe824d55983c9f063a2c9ef1a08b29812d406f"
},
{
"url": "https://git.kernel.org/stable/c/e108b22999edbc6f431466baf6b2016c19b7ed31"
},
{
"url": "https://git.kernel.org/stable/c/9f084ef0beb68091e96ab96f0e95579aac8a77f9"
},
{
"url": "https://git.kernel.org/stable/c/8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9"
},
{
"url": "https://git.kernel.org/stable/c/13fc051269d670810d9e314061b61c6dd06116a0"
},
{
"url": "https://git.kernel.org/stable/c/61ac0585d9f4344d3dfb84b5edff1fee7d532897"
},
{
"url": "https://git.kernel.org/stable/c/84f7c699f8d139f743c7dc11ef41d085690955bb"
},
{
"url": "https://git.kernel.org/stable/c/a113eba06bd1183c614d7994864d6e7054140cb9"
},
{
"url": "https://git.kernel.org/stable/c/de891c73c1cf41ac8de12c07fa2c84d6a912ad0c"
}
],
"title": "keys: make keyring indexes independent of kernel addresses",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-99223",
"datePublished": "2026-11-02T16:06:33.408Z",
"dateReserved": "2026-09-25T10:25:14.402Z",
"dateUpdated": "2026-11-03T19:12:57.119Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}