{"id":"CVE-2026-31682","revision":"283dc2cb9a4f4db4b2d942832eca5cb3","records":[{"revision":"283dc2cb9a4f4db4b2d942832eca5cb3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-31682","aliases":[],"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":0,"publishedAt":"2026-04-25T08:46:59.106+00:00","modifiedAt":"2026-10-19T18:56:04.675+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bridge/br_arp_nd_proxy.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"c68433fd291c9e88c00292095172c62d1997d662\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"4f397b950c916e9a1f8a4fce04ea0110206cad47\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"bd91ec85aa4c77d645bd2739fc56784157a88ca2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"658261898130da620fc3d0fbb0523efb3366cb55\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"2ba4caba423ed94d63006eb1d2227b0332ab7fcd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"9c55e41c73af5c4511070933b1bd25248521270c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"3a30f6469b058574f49efde61cd6f5d79e576053\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ed842faeb2bd49256f00485402f3113205f91d30\",\n                            \"lessThan\": \"a01aee7cafc575bb82f5529e8734e7052f9b16ea\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bridge/br_arp_nd_proxy.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.253\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.203\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.168\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.134\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.81\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.22\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.12\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":9.1,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662","https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47","https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2","https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55","https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd","https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c","https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053","https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31682","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-31682","identifiers":["CVE-2026-31682"]},"retained":false,"historicalAffected":[]}],"coverage":[]}