{"api_version":"1","generated_at":"2026-04-25T13:02:35+00:00","cve":"CVE-2026-31682","urls":{"html":"https://cve.report/CVE-2026-31682","api":"https://cve.report/api/cve/CVE-2026-31682.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31682","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31682"},"summary":{"title":"bridge: br_nd_send: linearize skb before parsing ND options","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-25 09:16:01","updated_at":"2026-04-25 09:16:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55","name":"https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053","name":"https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea","name":"https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662","name":"https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c","name":"https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd","name":"https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47","name":"https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2","name":"https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31682","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31682","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed842faeb2bd49256f00485402f3113205f91d30 c68433fd291c9e88c00292095172c62d1997d662 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed842faeb2bd49256f00485402f3113205f91d30 4f397b950c916e9a1f8a4fce04ea0110206cad47 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed842faeb2bd49256f00485402f3113205f91d30 bd91ec85aa4c77d645bd2739fc56784157a88ca2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed842faeb2bd49256f00485402f3113205f91d30 658261898130da620fc3d0fbb0523efb3366cb55 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.168 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.134 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.81 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.22 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.12 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bridge/br_arp_nd_proxy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c68433fd291c9e88c00292095172c62d1997d662","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"4f397b950c916e9a1f8a4fce04ea0110206cad47","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"bd91ec85aa4c77d645bd2739fc56784157a88ca2","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"658261898130da620fc3d0fbb0523efb3366cb55","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"2ba4caba423ed94d63006eb1d2227b0332ab7fcd","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"9c55e41c73af5c4511070933b1bd25248521270c","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"3a30f6469b058574f49efde61cd6f5d79e576053","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"},{"lessThan":"a01aee7cafc575bb82f5529e8734e7052f9b16ea","status":"affected","version":"ed842faeb2bd49256f00485402f3113205f91d30","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bridge/br_arp_nd_proxy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.15"},{"lessThan":"4.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.134","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.168","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.134","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.81","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.22","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.12","versionStartIncluding":"4.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"4.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-04-25T08:46:59.106Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31682","datePublished":"2026-04-25T08:46:59.106Z","dateReserved":"2026-03-09T15:48:24.130Z","dateUpdated":"2026-04-25T08:46:59.106Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-25 09:16:01","lastModifiedDate":"2026-04-25 09:16:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31682","Ordinal":"1","Title":"bridge: br_nd_send: linearize skb before parsing ND options","CVE":"CVE-2026-31682","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31682","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"bridge: br_nd_send: linearize skb before parsing ND options"}]}}}