{"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":"2026-05-11T22:15:07.575Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:15:07.575Z"},"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"}}}}