325 lines
15 KiB
JSON
325 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80792",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.793Z",
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"datePublished": "2026-09-04T15:13:04.537Z",
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"dateUpdated": "2026-11-06T17:05:54.401Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:43:45.535Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix use-after-free in ip6_finish_output2()\n\nip6_finish_output2() caches a pointer to the IPv6 destination\naddress (daddr) before invoking lwtunnel_xmit(). The LWT-BPF\ntransmit path or other encapsulation operations within\nlwtunnel_xmit() can reallocate the skb head, freeing the memory\nthat daddr points to. When lwtunnel_xmit() returns\nLWTUNNEL_XMIT_CONTINUE, the function continues to use the stale\ndaddr pointer to compute the nexthop and to look up or create the\nneighbour entry. This results in a use-after-free read, which can\nleak sensitive kernel data, pollute the neighbour table with\narbitrary values, misdirect traffic, or crash the system.\n\nFix this by re-fetching the IPv6 header and the destination\naddress pointer after lwtunnel_xmit() returns\nLWTUNNEL_XMIT_CONTINUE, ensuring that the subsequent nexthop\ncomputation and neighbour lookup operate on valid memory."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ipv6/ip6_output.c"
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],
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"versions": [
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{
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"version": "4132c4ad00ddbf3a175ea0d2c775b662a32f4c85",
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"lessThan": "75e0a544ebe9af663ef53ca21e9e9185c51fb54a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "c95f01b78266828a57060d754fcbfc92123a98ed",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "d960881b9312e781a3429aabceb223ce6b7c882f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "087ee0d914aaae929f1660c9ca878e367655ba1a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "3c770ac4e6f07af7c7b40c474a3efc61ffed7862",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "3dc98e5fe82d069dd29b124ffbdb679331dfea43",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "99219c82804f266189388e8bf1cf5135d10d5515",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "73a187384a8c8b983c7fea046d716b6752a1e7a3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e415ed3a4b8b246ee5e9d109ff5153efcf96b9f2",
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"lessThan": "d0d48d999b0eee6bb176ef4e39d9be868fa80f7e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1598154fd28ffa4a55beae1970475fd6776554b6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5.10.233",
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"lessThan": "5.10.267",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.4.289",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ipv6/ip6_output.c"
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],
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"versions": [
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{
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"version": "5.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.267",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.218",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.185",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.154",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.106",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.47",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.11",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.1",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.10.233",
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"versionEndExcluding": "5.10.267"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.218"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.1.185"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.6.154"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.12.106"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "6.18.47"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "7.1.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "7.2.1"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "7.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.4.289"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/75e0a544ebe9af663ef53ca21e9e9185c51fb54a"
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},
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{
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"url": "https://git.kernel.org/stable/c/c95f01b78266828a57060d754fcbfc92123a98ed"
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},
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{
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"url": "https://git.kernel.org/stable/c/d960881b9312e781a3429aabceb223ce6b7c882f"
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},
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{
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"url": "https://git.kernel.org/stable/c/087ee0d914aaae929f1660c9ca878e367655ba1a"
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},
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{
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"url": "https://git.kernel.org/stable/c/3c770ac4e6f07af7c7b40c474a3efc61ffed7862"
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},
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{
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"url": "https://git.kernel.org/stable/c/3dc98e5fe82d069dd29b124ffbdb679331dfea43"
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},
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{
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"url": "https://git.kernel.org/stable/c/99219c82804f266189388e8bf1cf5135d10d5515"
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},
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{
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"url": "https://git.kernel.org/stable/c/73a187384a8c8b983c7fea046d716b6752a1e7a3"
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},
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{
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"url": "https://git.kernel.org/stable/c/d0d48d999b0eee6bb176ef4e39d9be868fa80f7e"
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}
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],
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"title": "ipv6: fix use-after-free in ip6_finish_output2()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-80792",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T17:03:27.127514Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-06T17:05:54.401Z"
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}
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}
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]
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}
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} |