{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31752", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.139Z", "datePublished": "2026-05-01T14:14:44.298Z", "dateUpdated": "2026-05-01T14:14:44.298Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:14:44.298Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: validate ND option lengths\n\nbr_nd_send() walks ND options according to option-provided lengths.\nA malformed option can make the parser advance beyond the computed\noption span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address."}], "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": "82a42eceec7c6bdb0e0da94c0542a173b7ea57f2", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "259466f76f5a2148aff11134e68f4b4c6d52725b", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "c49b9256bbacb6a135654aebd12e4c0e87166b7c", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "837392a38445729c22e03d3abcf33f07763efd85", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "e71303a9190496136e240c4f2872b7b0b16027a7", "status": "affected", "versionType": "git"}, {"version": "ed842faeb2bd49256f00485402f3113205f91d30", "lessThan": "850837965af15707fd3142c1cf3c5bfaf022299b", "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/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2"}, {"url": "https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b"}, {"url": "https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a"}, {"url": "https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa"}, {"url": "https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c"}, {"url": "https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85"}, {"url": "https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7"}, {"url": "https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b"}], "title": "bridge: br_nd_send: validate ND option lengths", "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: validate ND option lengths\n\nbr_nd_send() walks ND options according to option-provided lengths.\nA malformed option can make the parser advance beyond the computed\noption span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address."}], "id": "CVE-2026-31752", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:38.090", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,82a42eceec7c6bdb0e0da94c0542a173b7ea57f2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,259466f76f5a2148aff11134e68f4b4c6d52725b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,c49b9256bbacb6a135654aebd12e4c0e87166b7c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,837392a38445729c22e03d3abcf33f07763efd85)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,e71303a9190496136e240c4f2872b7b0b16027a7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed842faeb2bd49256f00485402f3113205f91d30,850837965af15707fd3142c1cf3c5bfaf022299b)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.168,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.134,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.81,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-01T16:30:20.417986+00:00", "updated": "2026-05-01T16:30:20.418051+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}