{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64360","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.783Z","datePublished":"2026-07-25T08:50:16.573Z","dateUpdated":"2026-08-17T04:54:06.743Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:54:06.743Z"},"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":[{"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/bnode.c"],"versions":[{"version":"67ecc81f6492275c9c54280532f558483c99c90e","lessThan":"34684a04777358b2b40ac729e54c8e45359e46b3","status":"affected","versionType":"git"},{"version":"a1a60e79502279f996e55052f50cc14919020475","lessThan":"0b189b2204f1a2612dc68f8d139fb5b80539e710","status":"affected","versionType":"git"},{"version":"fe2891a9c43ab87d1a210d61e6438ca6936e2f62","lessThan":"8f72fd25a57a457866350359ddd27a43caa62c95","status":"affected","versionType":"git"},{"version":"384a66b89f9540a9a8cb0f48807697dfabaece4c","lessThan":"16ca053c2be5f4f3044dccf7fc19237dc820d394","status":"affected","versionType":"git"},{"version":"efc095b35b23297e419c2ab4fc1ed1a8f0781a29","lessThan":"d2afc7ecee476f9251dd87444f7fb6a424410922","status":"affected","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","lessThan":"f3461b84a4865d9b5e70fbb71da72ae044a3bcd2","status":"affected","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","lessThan":"d5b45bad75cd2730b8452aed4d3b20a2b2a12576","status":"affected","versionType":"git"},{"version":"a431930c9bac518bf99d6b1da526a7f37ddee8d8","lessThan":"d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf","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":"6.12.96","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/bnode.c"],"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":"6.12.96","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","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":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.297"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16.2"}]}]}],"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"}],"title":"hfs/hfsplus: zero-initialize buffer in hfs_bnode_read","x_generator":{"engine":"bippy-1.2.0"}}}}