Veille CVE
CVE-2026-64361
7.8 ÉlevéeDescription
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.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 7.8 Élevée | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Faiblesses (CWE)
Références
- https://git.kernel.org/stable/c/607217f7ad419b53926f71e3f75001813bbc08ad Patch
- https://git.kernel.org/stable/c/671c3fcc2ad31c1311ea6414382a2d95104ae1b9 Patch
- https://git.kernel.org/stable/c/7399c3baee7bb622a92f0b895cd4d3009a693f2b Patch
- https://git.kernel.org/stable/c/966cb76fb2857a4242cab6ea2ea17acf818a3da7 Patch
- https://git.kernel.org/stable/c/b6a481642ea1977be2f84dc08c5affd742c177e7 Patch
- https://git.kernel.org/stable/c/c25d3c931a63e762fcaa9cb125b901c53b62403f Patch
- https://git.kernel.org/stable/c/c8dd112173c02adf539fe2ad34a45f5e0068780d Patch
- https://git.kernel.org/stable/c/fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1 Patch