Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: hfs/hfsplus: zero-initialize buffer in hfs_bnode_read hfs_bnode_read() can return early without writing to the output buffer when is_bnode_offset_valid() fails or when check_and_correct_requested_ length() corrects the length to zero. Callers such as hfs_bnode_read_ u16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the result unconditionally, leading to KMSAN uninit-value reports. Rather than initializing at each individual call site, zero the buffer at the start of hfs_bnode_read() before any validation checks. This ensures all callers in both hfs and hfsplus get a deterministic zero value regardless of which early-return path is taken.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 67ecc81f6492275c9c54280532f558483c99c90e before 34684a04777358b2b40ac729e54c8e45359e46b3; affected a1a60e79502279f996e55052f50cc14919020475 before 0b189b2204f1a2612dc68f8d139fb5b80539e710; affected fe2891a9c43ab87d1a210d61e6438ca6936e2f62 before 8f72fd25a57a457866350359ddd27a43caa62c95; affected 384a66b89f9540a9a8cb0f48807697dfabaece4c before 16ca053c2be5f4f3044dccf7fc19237dc820d394; affected efc095b35b23297e419c2ab4fc1ed1a8f0781a29 before d2afc7ecee476f9251dd87444f7fb6a424410922; affected a431930c9bac518bf99d6b1da526a7f37ddee8d8 before f3461b84a4865d9b5e70fbb71da72ae044a3bcd2; affected a431930c9bac518bf99d6b1da526a7f37ddee8d8 before d5b45bad75cd2730b8452aed4d3b20a2b2a12576; affected a431930c9bac518bf99d6b1da526a7f37ddee8d8 before d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf; affected e7d2dc2421e821e4045775e6dc226378328de6f6; affected fc7f732984ec91f30be3e574e0644066d07f2b78; affected eec522fd0d28106b14a59ab2d658605febe4a3bb; affected 5.10.241 before 5.10.261; affected 5.15.190 before 5.15.212; affected 6.1.149 before 6.1.178; affected 6.6.103 before 6.6.145; affected 6.12.43 before 6.12.96; affected 5.4.297 before 5.5; affected 6.15.11 before 6.16; affected 6.16.2 before 6.17 |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.96 through 6.12.*; unaffected 6.18.39 through 6.18.*; unaffected 7.1.4 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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