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vuln-cve/data/2026/80xxx/CVE-2026-80733.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-80733",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-08-26T14:34:25.789Z",
"datePublished": "2026-09-03T08:21:50.136Z",
"dateUpdated": "2026-11-06T17:05:53.381Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-09-03T08:21:50.136Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE() from sk_mc_loop()\n\nsk_mc_loop() can be called for sockets that are neither AF_INET\nnor AF_INET6 (e.g. AF_PACKET sockets when sending packets via raw/packet\nsocket over virtual devices such as VRF or ipvlan).\n\nIn such cases, sk_family is not AF_INET/AF_INET6 and sk_mc_loop() falls\nthrough the switch statement and triggers WARN_ON_ONCE(1).\n\nNon-INET sockets do not support IP_MULTICAST_LOOP or IPV6_MULTICAST_LOOP\noptions, so loopback should default to true without generating a warning."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/core/sock.c"
],
"versions": [
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "97133c4d42654578fab95abe47359ebe784dde18",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "f625c742b33dc137c209dd13d1c5f12b1c18d71c",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "ad7fa2f411cb30f63d6725f111be134064cdb718",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "d2adc4e80b29e58b5162ae09f0f657a215806c8c",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "ad7dbb1d14b1b4406eca8ef9478e8de312ba0cfe",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "c8f256dc849205ccb2bd78bd99a3497b972b44e0",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "0d75f2c1d0764efa756ad9c1e078d8c09ea8fc1f",
"status": "affected",
"versionType": "git"
},
{
"version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
"lessThan": "b8a39a09ae4eaae04309e1e38ed6a1101d967496",
"status": "affected",
"versionType": "git"
},
{
"version": "c91f81773cd4bbebfe744e9ab30a7ce093f9b930",
"status": "affected",
"versionType": "git"
},
{
"version": "c8c30b2b17f2133e953850c547e3902c3a3d80e2",
"status": "affected",
"versionType": "git"
},
{
"version": "3fe207e4637a2e792c46a08666aa722f77d7f8f7",
"status": "affected",
"versionType": "git"
},
{
"version": "3.14.40",
"lessThan": "3.15",
"status": "affected",
"versionType": "semver"
},
{
"version": "3.18.13",
"lessThan": "3.19",
"status": "affected",
"versionType": "semver"
},
{
"version": "3.19.6",
"lessThan": "3.20",
"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/core/sock.c"
],
"versions": [
{
"version": "4.0",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.0",
"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": "6.6.152",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.104",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.45",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.9",
"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": "4.0",
"versionEndExcluding": "5.10.265"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "5.15.216"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "6.1.183"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "6.6.152"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "6.12.104"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "6.18.45"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "7.1.9"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.0",
"versionEndExcluding": "7.2"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.14.40"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.18.13"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.19.6"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/97133c4d42654578fab95abe47359ebe784dde18"
},
{
"url": "https://git.kernel.org/stable/c/f625c742b33dc137c209dd13d1c5f12b1c18d71c"
},
{
"url": "https://git.kernel.org/stable/c/ad7fa2f411cb30f63d6725f111be134064cdb718"
},
{
"url": "https://git.kernel.org/stable/c/d2adc4e80b29e58b5162ae09f0f657a215806c8c"
},
{
"url": "https://git.kernel.org/stable/c/ad7dbb1d14b1b4406eca8ef9478e8de312ba0cfe"
},
{
"url": "https://git.kernel.org/stable/c/c8f256dc849205ccb2bd78bd99a3497b972b44e0"
},
{
"url": "https://git.kernel.org/stable/c/0d75f2c1d0764efa756ad9c1e078d8c09ea8fc1f"
},
{
"url": "https://git.kernel.org/stable/c/b8a39a09ae4eaae04309e1e38ed6a1101d967496"
}
],
"title": "net: remove WARN_ON_ONCE() from sk_mc_loop()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-80733",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T17:02:55.348385Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T17:05:53.381Z"
}
}
]
}
}