{"id":"CVE-2026-64355","revision":"d5a5112d89464c7da4a542dac4ca859a","records":[{"revision":"d5a5112d89464c7da4a542dac4ca859a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64355","aliases":[],"title":"bpf: Reject fragmented frames in devmap","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject fragmented frames in devmap\n\nDevmap broadcast redirects clone the packet for all but the last\ndestination.\n\nFor native XDP, that clone path copies only the linear xdp_frame data,\nwhile fragmented frames keep skb_shared_info in tailroom outside the\nlinear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but\nwithout valid frag metadata, and the later free path can interpret\nuninitialized tail data as skb_shared_info, leading to an out-of-bounds\naccess during frame return.\n\nReject fragmented native XDP frames in dev_map_enqueue_clone().\n\nAdd the same restriction to the generic XDP clone path in\ndev_map_redirect_clone(). Generic XDP represents fragmented packets as\nnonlinear skbs, and rejecting them here keeps clone-based broadcast\nsupport aligned between native and generic XDP.","state":0,"publishedAt":"2026-07-25T08:50:13.41+00:00","modifiedAt":"2026-10-19T20:38:24.59+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                        \"kernel/bpf/devmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"47baddc856ae7e93a565dd9deeb797999b179466\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"07a4c11ee8ef4abcb39d922e9e410ae269671cdf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"bccbab36ff228e0825eb85d9b0f9b8434cd0a399\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"c5b4f5efcb55c1af3fe44ff712d31b7fb098a831\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"a9bb2d9c798cb62a4050a991c27b752770c33afe\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"51d07c12ca411e692c424ecdabf077f1e61a61be\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e624d4ed4aa8cc3c69d1359b0aaea539203ed266\",\n                            \"lessThan\": \"aa496720618f1a6054f1c870bf10b4f6c99bf656\",\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                        \"kernel/bpf/devmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.96\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.39\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.4\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466","https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf","https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399","https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831","https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe","https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be","https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64355","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64355","identifiers":["CVE-2026-64355"]},"retained":false,"historicalAffected":[]}],"coverage":[]}