{"api_version":"1","generated_at":"2026-05-30T00:10:24+00:00","cve":"CVE-2026-46172","urls":{"html":"https://cve.report/CVE-2026-46172","api":"https://cve.report/api/cve/CVE-2026-46172.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46172","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46172"},"summary":{"title":"ipv6: xfrm6: release dst on error in xfrm6_rcv_encap()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: xfrm6: release dst on error in xfrm6_rcv_encap()\n\nxfrm6_rcv_encap() performs an IPv6 route lookup when the skb does not\nalready have a dst attached. ip6_route_input_lookup() returns a\nreferenced dst entry even when the lookup resolves to an error route.\n\nIf dst->error is set, xfrm6_rcv_encap() drops the skb without attaching\nthe dst to the skb and without releasing the reference returned by the\nlookup. Repeated packets hitting this path therefore leak dst entries.\n\nRelease the dst before jumping to the drop path.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:32","updated_at":"2026-05-28 13:44:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9d5047782f9bd2829e529df69209bf3232eb561f","name":"https://git.kernel.org/stable/c/9d5047782f9bd2829e529df69209bf3232eb561f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c2efc4956981066df2fef1cc77391b523db6d8e4","name":"https://git.kernel.org/stable/c/c2efc4956981066df2fef1cc77391b523db6d8e4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13","name":"https://git.kernel.org/stable/c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bc0fcb9823cd0894934cf968b525c575833d7078","name":"https://git.kernel.org/stable/c/bc0fcb9823cd0894934cf968b525c575833d7078","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90a","name":"https://git.kernel.org/stable/c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46172","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46172","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 c2efc4956981066df2fef1cc77391b523db6d8e4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 9d5047782f9bd2829e529df69209bf3232eb561f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 6a5eec0a2a0e99ec9743cf8f1c4082178811d90a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 bc0fcb9823cd0894934cf968b525c575833d7078 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.140 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.88 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.30 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.7 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46172","cve":"CVE-2026-46172","epss":"0.000180000","percentile":"0.051520000","score_date":"2026-05-28","updated_at":"2026-05-29 00:13:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/xfrm6_protocol.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c2efc4956981066df2fef1cc77391b523db6d8e4","status":"affected","version":"0146dca70b877b73c5fd9c67912b8a0ca8a7bac7","versionType":"git"},{"lessThan":"554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13","status":"affected","version":"0146dca70b877b73c5fd9c67912b8a0ca8a7bac7","versionType":"git"},{"lessThan":"9d5047782f9bd2829e529df69209bf3232eb561f","status":"affected","version":"0146dca70b877b73c5fd9c67912b8a0ca8a7bac7","versionType":"git"},{"lessThan":"6a5eec0a2a0e99ec9743cf8f1c4082178811d90a","status":"affected","version":"0146dca70b877b73c5fd9c67912b8a0ca8a7bac7","versionType":"git"},{"lessThan":"bc0fcb9823cd0894934cf968b525c575833d7078","status":"affected","version":"0146dca70b877b73c5fd9c67912b8a0ca8a7bac7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/xfrm6_protocol.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.8"},{"lessThan":"5.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.88","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.30","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.7","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc3","versionStartIncluding":"5.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: xfrm6: release dst on error in xfrm6_rcv_encap()\n\nxfrm6_rcv_encap() performs an IPv6 route lookup when the skb does not\nalready have a dst attached. ip6_route_input_lookup() returns a\nreferenced dst entry even when the lookup resolves to an error route.\n\nIf dst->error is set, xfrm6_rcv_encap() drops the skb without attaching\nthe dst to the skb and without releasing the reference returned by the\nlookup. Repeated packets hitting this path therefore leak dst entries.\n\nRelease the dst before jumping to the drop path."}],"providerMetadata":{"dateUpdated":"2026-05-28T09:36:26.926Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c2efc4956981066df2fef1cc77391b523db6d8e4"},{"url":"https://git.kernel.org/stable/c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13"},{"url":"https://git.kernel.org/stable/c/9d5047782f9bd2829e529df69209bf3232eb561f"},{"url":"https://git.kernel.org/stable/c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90a"},{"url":"https://git.kernel.org/stable/c/bc0fcb9823cd0894934cf968b525c575833d7078"}],"title":"ipv6: xfrm6: release dst on error in xfrm6_rcv_encap()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46172","datePublished":"2026-05-28T09:36:26.926Z","dateReserved":"2026-05-13T15:03:33.103Z","dateUpdated":"2026-05-28T09:36:26.926Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:32","lastModifiedDate":"2026-05-28 13:44:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46172","Ordinal":"1","Title":"ipv6: xfrm6: release dst on error in xfrm6_rcv_encap()","CVE":"CVE-2026-46172","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46172","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: xfrm6: release dst on error in xfrm6_rcv_encap()\n\nxfrm6_rcv_encap() performs an IPv6 route lookup when the skb does not\nalready have a dst attached. ip6_route_input_lookup() returns a\nreferenced dst entry even when the lookup resolves to an error route.\n\nIf dst->error is set, xfrm6_rcv_encap() drops the skb without attaching\nthe dst to the skb and without releasing the reference returned by the\nlookup. Repeated packets hitting this path therefore leak dst entries.\n\nRelease the dst before jumping to the drop path.","Type":"Description","Title":"ipv6: xfrm6: release dst on error in xfrm6_rcv_encap()"}]}}}