{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64355", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.782Z", "datePublished": "2026-07-25T08:50:13.410Z", "dateUpdated": "2026-07-25T08:50:13.410Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:50:13.410Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/devmap.c"], "versions": [{"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "47baddc856ae7e93a565dd9deeb797999b179466", "status": "affected", "versionType": "git"}, {"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "07a4c11ee8ef4abcb39d922e9e410ae269671cdf", "status": "affected", "versionType": "git"}, {"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "bccbab36ff228e0825eb85d9b0f9b8434cd0a399", "status": "affected", "versionType": "git"}, {"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "c5b4f5efcb55c1af3fe44ff712d31b7fb098a831", "status": "affected", "versionType": "git"}, {"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "a9bb2d9c798cb62a4050a991c27b752770c33afe", "status": "affected", "versionType": "git"}, {"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "51d07c12ca411e692c424ecdabf077f1e61a61be", "status": "affected", "versionType": "git"}, {"version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266", "lessThan": "aa496720618f1a6054f1c870bf10b4f6c99bf656", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/devmap.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "5.14", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466"}, {"url": "https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf"}, {"url": "https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399"}, {"url": "https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831"}, {"url": "https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe"}, {"url": "https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be"}, {"url": "https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656"}], "title": "bpf: Reject fragmented frames in devmap", "x_generator": {"engine": "bippy-1.2.0"}}}}

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