Description
In the Linux kernel, the following vulnerability has been resolved:
hfs/hfsplus: fix u32 overflow in check_and_correct_requested_length
check_and_correct_requested_length() compares (off + len) against node_size using u32 arithmetic. When the caller passes a large len value (e.g. from an underflowed subtraction in hfs_brec_remove()), off + len can wrap past 2^32 and produce a small result, causing the bounds check to pass when it should fail.
For example, with off=14 and len=0xFFFFFFF2 (underflowed from data_off - keyoffset - size in hfs_brec_remove), off + len wraps to 6, which is less than a typical node_size of 512, so the check passes and the subsequent memmove reads ~4GB past the node buffer.
Fix this by widening the addition to u64 before comparing against node_size. This prevents the u32 wrap while keeping the logic straightforward.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 67ecc81f6492275c9c54280532f558483c99c90e, < c8dd112173c02adf539fe2ad34a45f5e0068780d; >= a1a60e79502279f996e55052f50cc14919020475, < fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1; >= fe2891a9c43ab87d1a210d61e6438ca6936e2f62, < 671c3fcc2ad31c1311ea6414382a2d95104ae1b9; >= 384a66b89f9540a9a8cb0f48807697dfabaece4c, < b6a481642ea1977be2f84dc08c5affd742c177e7; >= efc095b35b23297e419c2ab4fc1ed1a8f0781a29, < 7399c3baee7bb622a92f0b895cd4d3009a693f2b; >= a431930c9bac518bf99d6b1da526a7f37ddee8d8, < 607217f7ad419b53926f71e3f75001813bbc08ad; >= a431930c9bac518bf99d6b1da526a7f37ddee8d8, < c25d3c931a63e762fcaa9cb125b901c53b62403f; >= a431930c9bac518bf99d6b1da526a7f37ddee8d8, < 966cb76fb2857a4242cab6ea2ea17acf818a3da7; e7d2dc2421e821e4045775e6dc226378328de6f6; fc7f732984ec91f30be3e574e0644066d07f2b78; eec522fd0d28106b14a59ab2d658605febe4a3bb; >= 5.10.241, < 5.10.261; >= 5.15.190, < 5.15.212; >= 6.1.149, < 6.1.178; >= 6.6.103, < 6.6.145; >= 6.12.43, < 6.12.97; >= 5.4.297, < 5.5; >= 6.15.11, < 6.16; >= 6.16.2, < 6.17 |
| Linux | Linux | 6.17 |
References
- https://git.kernel.org/stable/c/607217f7ad419b53926f71e3f75001813bbc08adPatch
- https://git.kernel.org/stable/c/671c3fcc2ad31c1311ea6414382a2d95104ae1b9Patch
- https://git.kernel.org/stable/c/7399c3baee7bb622a92f0b895cd4d3009a693f2bPatch
- https://git.kernel.org/stable/c/966cb76fb2857a4242cab6ea2ea17acf818a3da7Patch
- https://git.kernel.org/stable/c/b6a481642ea1977be2f84dc08c5affd742c177e7Patch
- https://git.kernel.org/stable/c/c25d3c931a63e762fcaa9cb125b901c53b62403fPatch
- https://git.kernel.org/stable/c/c8dd112173c02adf539fe2ad34a45f5e0068780dPatch
- https://git.kernel.org/stable/c/fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1Patch
Timeline
- Published
- Jul 25, 2026
- Last modified
- Sep 4, 2026
- NVD status
- Analyzed