{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31682", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.130Z", "datePublished": "2026-04-25T08:46:59.106Z", "dateUpdated": "2026-04-25T08:46:59.106Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-25T08:46:59.106Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: linearize skb before parsing ND options\n\nbr_nd_send() parses neighbour discovery options from ns->opt[] and\nassumes that these options are in the linear part of request.\n\nIts callers only guarantee that the ICMPv6 header and target address\nare available, so the option area can still be non-linear. Parsing\nns->opt[] in that case can access data past the linear buffer.\n\nLinearize request before option parsing and derive ns from the linear\nnetwork header."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bridge/br_arp_nd_proxy.c"], "versions": [{"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "c68433fd291c9e88c00292095172c62d1997d662", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "4f397b950c916e9a1f8a4fce04ea0110206cad47", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "bd91ec85aa4c77d645bd2739fc56784157a88ca2", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "658261898130da620fc3d0fbb0523efb3366cb55", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "2ba4caba423ed94d63006eb1d2227b0332ab7fcd", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "9c55e41c73af5c4511070933b1bd25248521270c", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "3a30f6469b058574f49efde61cd6f5d79e576053", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "a01aee7cafc575bb82f5529e8734e7052f9b16ea", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bridge/br_arp_nd_proxy.c"], "versions": [{"version": "4.15", "status": "affected"}, {"version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.168", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.134", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "4.15", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.1.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.6.134"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662"}, {"url": "https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47"}, {"url": "https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2"}, {"url": "https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55"}, {"url": "https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd"}, {"url": "https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c"}, {"url": "https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053"}, {"url": "https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea"}], "title": "bridge: br_nd_send: linearize skb before parsing ND options", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: linearize skb before parsing ND options\n\nbr_nd_send() parses neighbour discovery options from ns->opt[] and\nassumes that these options are in the linear part of request.\n\nIts callers only guarantee that the ICMPv6 header and target address\nare available, so the option area can still be non-linear. Parsing\nns->opt[] in that case can access data past the linear buffer.\n\nLinearize request before option parsing and derive ns from the linear\nnetwork header."}], "id": "CVE-2026-31682", "lastModified": "2026-04-25T09:16:01.913", "metrics": {}, "published": "2026-04-25T09:16:01.913", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}