{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64361", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.783Z", "datePublished": "2026-07-25T08:50:17.345Z", "dateUpdated": "2026-07-25T08:50:17.345Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:50:17.345Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfs/hfsplus: fix u32 overflow in check_and_correct_requested_length\n\ncheck_and_correct_requested_length() compares (off + len) against\nnode_size using u32 arithmetic. When the caller passes a large len\nvalue (e.g. from an underflowed subtraction in hfs_brec_remove()),\noff + len can wrap past 2^32 and produce a small result, causing the\nbounds check to pass when it should fail.\n\nFor example, with off=14 and len=0xFFFFFFF2 (underflowed from\ndata_off - keyoffset - size in hfs_brec_remove), off + len wraps to 6,\nwhich is less than a typical node_size of 512, so the check passes and\nthe subsequent memmove reads ~4GB past the node buffer.\n\nFix this by widening the addition to u64 before comparing against\nnode_size. This prevents the u32 wrap while keeping the logic\nstraightforward."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/hfs/bnode.c", "fs/hfsplus/hfsplus_fs.h"], "versions": [{"version": "67ecc81f6492275c9c54280532f558483c99c90e", "lessThan": "c8dd112173c02adf539fe2ad34a45f5e0068780d", "status": "affected", "versionType": "git"}, {"version": "a1a60e79502279f996e55052f50cc14919020475", "lessThan": "fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1", "status": "affected", "versionType": "git"}, {"version": "fe2891a9c43ab87d1a210d61e6438ca6936e2f62", "lessThan": "671c3fcc2ad31c1311ea6414382a2d95104ae1b9", "status": "affected", "versionType": "git"}, {"version": "384a66b89f9540a9a8cb0f48807697dfabaece4c", "lessThan": "b6a481642ea1977be2f84dc08c5affd742c177e7", "status": "affected", "versionType": "git"}, {"version": "efc095b35b23297e419c2ab4fc1ed1a8f0781a29", "lessThan": "7399c3baee7bb622a92f0b895cd4d3009a693f2b", "status": "affected", "versionType": "git"}, {"version": "a431930c9bac518bf99d6b1da526a7f37ddee8d8", "lessThan": "607217f7ad419b53926f71e3f75001813bbc08ad", "status": "affected", "versionType": "git"}, {"version": "a431930c9bac518bf99d6b1da526a7f37ddee8d8", "lessThan": "c25d3c931a63e762fcaa9cb125b901c53b62403f", "status": "affected", "versionType": "git"}, {"version": "a431930c9bac518bf99d6b1da526a7f37ddee8d8", "lessThan": "966cb76fb2857a4242cab6ea2ea17acf818a3da7", "status": "affected", "versionType": "git"}, {"version": "e7d2dc2421e821e4045775e6dc226378328de6f6", "status": "affected", "versionType": "git"}, {"version": "fc7f732984ec91f30be3e574e0644066d07f2b78", "status": "affected", "versionType": "git"}, {"version": "eec522fd0d28106b14a59ab2d658605febe4a3bb", "status": "affected", "versionType": "git"}, {"version": "5.10.241", "lessThan": "5.10.261", "status": "affected", "versionType": "semver"}, {"version": "5.15.190", "lessThan": "5.15.212", "status": "affected", "versionType": "semver"}, {"version": "6.1.149", "lessThan": "6.1.178", "status": "affected", "versionType": "semver"}, {"version": "6.6.103", "lessThan": "6.6.145", "status": "affected", "versionType": "semver"}, {"version": "6.12.43", "lessThan": "6.12.97", "status": "affected", "versionType": "semver"}, {"version": "5.4.297", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "6.15.11", "lessThan": "6.16", "status": "affected", "versionType": "semver"}, {"version": "6.16.2", "lessThan": "6.17", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/hfs/bnode.c", "fs/hfsplus/hfsplus_fs.h"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "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": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "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": "5.10.241", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.190", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.149", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.103", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.43", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, 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"https://git.kernel.org/stable/c/607217f7ad419b53926f71e3f75001813bbc08ad"}, {"url": "https://git.kernel.org/stable/c/c25d3c931a63e762fcaa9cb125b901c53b62403f"}, {"url": "https://git.kernel.org/stable/c/966cb76fb2857a4242cab6ea2ea17acf818a3da7"}], "title": "hfs/hfsplus: fix u32 overflow in check_and_correct_requested_length", "x_generator": {"engine": "bippy-1.2.0"}}}}

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