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vuln-cve/data/2026/64xxx/CVE-2026-64518.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-64518",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-07-19T15:36:31.794Z",
"datePublished": "2026-07-25T09:14:44.603Z",
"dateUpdated": "2026-07-25T09:14:44.603Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-07-25T09:14:44.603Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: Fix out-of-bounds access for twsk in tcp_ao_established_key().\n\nlockdep_sock_is_held() was added in tcp_ao_established_key()\nby the cited commit.\n\nIt can be called from tcp_v[46]_timewait_ack() with twsk.\n\nSince it does not have sk->sk_lock, the lockdep annotation\nresults in out-of-bound access.\n\n $ pahole -C tcp_timewait_sock vmlinux | grep size\n \t/* size: 288, cachelines: 5, members: 8 */\n $ pahole -C sock vmlinux | grep sk_lock\n \tsocket_lock_t sk_lock; /* 440 192 */\n\nLet's not use lockdep_sock_is_held() for TCP_TIME_WAIT."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/ipv4/tcp_ao.c"
],
"versions": [
{
"version": "051f49d5176613dea88ecf73a101c3a99f4720e9",
"lessThan": "87bb3e719042f0030a6dad39118c6a6b2a491ad9",
"status": "affected",
"versionType": "git"
},
{
"version": "6b2d11e2d8fc130df4708be0b6b53fd3e6b54cf6",
"lessThan": "510db031ba6eb40134f84c90ef963ea4b6dfb878",
"status": "affected",
"versionType": "git"
},
{
"version": "6b2d11e2d8fc130df4708be0b6b53fd3e6b54cf6",
"lessThan": "29cf64d128c94cf98d1c69d8b2962d39db5ff4c6",
"status": "affected",
"versionType": "git"
},
{
"version": "6b2d11e2d8fc130df4708be0b6b53fd3e6b54cf6",
"lessThan": "03cb001ef87b3f8d859cf7f96329acf3d6235d29",
"status": "affected",
"versionType": "git"
},
{
"version": "6.12.5",
"lessThan": "6.12.92",
"status": "affected",
"versionType": "semver"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/ipv4/tcp_ao.c"
],
"versions": [
{
"version": "6.13",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.13",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.92",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.34",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0.11",
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1",
"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": "6.12.5",
"versionEndExcluding": "6.12.92"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "6.18.34"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "7.0.11"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "7.1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/87bb3e719042f0030a6dad39118c6a6b2a491ad9"
},
{
"url": "https://git.kernel.org/stable/c/510db031ba6eb40134f84c90ef963ea4b6dfb878"
},
{
"url": "https://git.kernel.org/stable/c/29cf64d128c94cf98d1c69d8b2962d39db5ff4c6"
},
{
"url": "https://git.kernel.org/stable/c/03cb001ef87b3f8d859cf7f96329acf3d6235d29"
}
],
"title": "tcp: Fix out-of-bounds access for twsk in tcp_ao_established_key().",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}