{"id":"CVE-2026-64360","state":"PUBLISHED","title":"hfs/hfsplus: zero-initialize buffer in hfs_bnode_read","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhfs/hfsplus: zero-initialize buffer in hfs_bnode_read\n\nhfs_bnode_read() can return early without writing to the output buffer\nwhen is_bnode_offset_valid() fails or when check_and_correct_requested_\nlength() corrects the length to zero.  Callers such as hfs_bnode_read_\nu16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the\nresult unconditionally, leading to KMSAN uninit-value reports.\n\nRather than initializing at each individual call site, zero the buffer\nat the start of hfs_bnode_read() before any validation checks.  This\nensures all callers in both hfs and hfsplus get a deterministic zero\nvalue regardless of which early-return path is taken.","publishedAt":"2026-07-25T08:50:16.573Z","updatedAt":"2026-08-17T04:54:06.743Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"67ecc81f6492275c9c54280532f558483c99c90e","status":"affected","lessThan":"34684a04777358b2b40ac729e54c8e45359e46b3","versionType":"git"},{"version":"a1a60e79502279f996e55052f50cc14919020475","status":"affected","lessThan":"0b189b2204f1a2612dc68f8d139fb5b80539e710","versionType":"git"},{"version":"fe2891a9c43ab87d1a210d61e6438ca6936e2f62","status":"affected","lessThan":"8f72fd25a57a457866350359ddd27a43caa62c95","versionType":"git"},{"version":"384a66b89f9540a9a8cb0f48807697dfabaece4c","status":"affected","lessThan":"16ca053c2be5f4f3044dccf7fc19237dc820d394","versionType":"git"},{"version":"efc095b35b23297e419c2ab4fc1ed1a8f0781a29","status":"affected","lessThan":"d2afc7ecee476f9251dd87444f7fb6a424410922","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","status":"affected","lessThan":"f3461b84a4865d9b5e70fbb71da72ae044a3bcd2","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","status":"affected","lessThan":"d5b45bad75cd2730b8452aed4d3b20a2b2a12576","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","status":"affected","lessThan":"d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf","versionType":"git"},{"version":"e7d2dc2421e821e4045775e6dc226378328de6f6","status":"affected","versionType":"git"},{"version":"fc7f732984ec91f30be3e574e0644066d07f2b78","status":"affected","versionType":"git"},{"version":"eec522fd0d28106b14a59ab2d658605febe4a3bb","status":"affected","versionType":"git"},{"version":"5.10.241","status":"affected","lessThan":"5.10.261","versionType":"semver"},{"version":"5.15.190","status":"affected","lessThan":"5.15.212","versionType":"semver"},{"version":"6.1.149","status":"affected","lessThan":"6.1.178","versionType":"semver"},{"version":"6.6.103","status":"affected","lessThan":"6.6.145","versionType":"semver"},{"version":"6.12.43","status":"affected","lessThan":"6.12.96","versionType":"semver"},{"version":"5.4.297","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfs/bnode.c","fs/hfsplus/bnode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.96","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.39","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.4","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfs/bnode.c","fs/hfsplus/bnode.c"]}],"references":["https://git.kernel.org/stable/c/34684a04777358b2b40ac729e54c8e45359e46b3","https://git.kernel.org/stable/c/0b189b2204f1a2612dc68f8d139fb5b80539e710","https://git.kernel.org/stable/c/8f72fd25a57a457866350359ddd27a43caa62c95","https://git.kernel.org/stable/c/16ca053c2be5f4f3044dccf7fc19237dc820d394","https://git.kernel.org/stable/c/d2afc7ecee476f9251dd87444f7fb6a424410922","https://git.kernel.org/stable/c/f3461b84a4865d9b5e70fbb71da72ae044a3bcd2","https://git.kernel.org/stable/c/d5b45bad75cd2730b8452aed4d3b20a2b2a12576","https://git.kernel.org/stable/c/d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64360.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64360","state":"PUBLISHED","datePublished":"2026-07-25T08:50:16.573Z","dateUpdated":"2026-08-17T04:54:06.743Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.783Z"},"containers":{"cna":{"title":"hfs/hfsplus: zero-initialize buffer in hfs_bnode_read","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhfs/hfsplus: zero-initialize buffer in hfs_bnode_read\n\nhfs_bnode_read() can return early without writing to the output buffer\nwhen is_bnode_offset_valid() fails or when check_and_correct_requested_\nlength() corrects the length to zero.  Callers such as hfs_bnode_read_\nu16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the\nresult unconditionally, leading to KMSAN uninit-value reports.\n\nRather than initializing at each individual call site, zero the buffer\nat the start of hfs_bnode_read() before any validation checks.  This\nensures all callers in both hfs and hfsplus get a deterministic zero\nvalue regardless of which early-return path is taken."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"67ecc81f6492275c9c54280532f558483c99c90e","status":"affected","lessThan":"34684a04777358b2b40ac729e54c8e45359e46b3","versionType":"git"},{"version":"a1a60e79502279f996e55052f50cc14919020475","status":"affected","lessThan":"0b189b2204f1a2612dc68f8d139fb5b80539e710","versionType":"git"},{"version":"fe2891a9c43ab87d1a210d61e6438ca6936e2f62","status":"affected","lessThan":"8f72fd25a57a457866350359ddd27a43caa62c95","versionType":"git"},{"version":"384a66b89f9540a9a8cb0f48807697dfabaece4c","status":"affected","lessThan":"16ca053c2be5f4f3044dccf7fc19237dc820d394","versionType":"git"},{"version":"efc095b35b23297e419c2ab4fc1ed1a8f0781a29","status":"affected","lessThan":"d2afc7ecee476f9251dd87444f7fb6a424410922","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","status":"affected","lessThan":"f3461b84a4865d9b5e70fbb71da72ae044a3bcd2","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","status":"affected","lessThan":"d5b45bad75cd2730b8452aed4d3b20a2b2a12576","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","status":"affected","lessThan":"d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf","versionType":"git"},{"version":"e7d2dc2421e821e4045775e6dc226378328de6f6","status":"affected","versionType":"git"},{"version":"fc7f732984ec91f30be3e574e0644066d07f2b78","status":"affected","versionType":"git"},{"version":"eec522fd0d28106b14a59ab2d658605febe4a3bb","status":"affected","versionType":"git"},{"version":"5.10.241","status":"affected","lessThan":"5.10.261","versionType":"semver"},{"version":"5.15.190","status":"affected","lessThan":"5.15.212","versionType":"semver"},{"version":"6.1.149","status":"affected","lessThan":"6.1.178","versionType":"semver"},{"version":"6.6.103","status":"affected","lessThan":"6.6.145","versionType":"semver"},{"version":"6.12.43","status":"affected","lessThan":"6.12.96","versionType":"semver"},{"version":"5.4.297","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfs/bnode.c","fs/hfsplus/bnode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.96","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.39","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.4","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfs/bnode.c","fs/hfsplus/bnode.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/34684a04777358b2b40ac729e54c8e45359e46b3"},{"url":"https://git.kernel.org/stable/c/0b189b2204f1a2612dc68f8d139fb5b80539e710"},{"url":"https://git.kernel.org/stable/c/8f72fd25a57a457866350359ddd27a43caa62c95"},{"url":"https://git.kernel.org/stable/c/16ca053c2be5f4f3044dccf7fc19237dc820d394"},{"url":"https://git.kernel.org/stable/c/d2afc7ecee476f9251dd87444f7fb6a424410922"},{"url":"https://git.kernel.org/stable/c/f3461b84a4865d9b5e70fbb71da72ae044a3bcd2"},{"url":"https://git.kernel.org/stable/c/d5b45bad75cd2730b8452aed4d3b20a2b2a12576"},{"url":"https://git.kernel.org/stable/c/d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:54:06.743Z"},"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:*:*:*:*: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