{"id":"CVE-2026-31682","summary":"bridge: br_nd_send: linearize skb before parsing ND options","details":"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-\u003eopt[] 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-\u003eopt[] in that case can access data past the linear buffer.\n\nLinearize request before option parsing and derive ns from the linear\nnetwork header.","modified":"2026-04-26T04:22:21.858484Z","published":"2026-04-25T08:46:59.106Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31682.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47"},{"type":"WEB","url":"https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31682.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31682"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ed842faeb2bd49256f00485402f3113205f91d30"},{"fixed":"c68433fd291c9e88c00292095172c62d1997d662"},{"fixed":"4f397b950c916e9a1f8a4fce04ea0110206cad47"},{"fixed":"bd91ec85aa4c77d645bd2739fc56784157a88ca2"},{"fixed":"658261898130da620fc3d0fbb0523efb3366cb55"},{"fixed":"2ba4caba423ed94d63006eb1d2227b0332ab7fcd"},{"fixed":"9c55e41c73af5c4511070933b1bd25248521270c"},{"fixed":"3a30f6469b058574f49efde61cd6f5d79e576053"},{"fixed":"a01aee7cafc575bb82f5529e8734e7052f9b16ea"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31682.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.168"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.134"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.81"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.22"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31682.json"}}],"schema_version":"1.7.5"}