CVE-2026-64361
CVE CVE-2026-64361EUVD EUVD-2026-48905Published 2026-07-25T08:50:17.000ZLast changed 2026-08-05T12:41:05.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux a431930c9bac518bf99d6b1da526a7f37ddee8d8 <966cb76fb2857a4242cab6ea2ea17acf818a3da7; patch: 6.6.145; efc095b35b23297e419c2ab4fc1ed1a8f0781a29 <7399c3baee7bb622a92f0b895cd4d3009a693f2b; eec522fd0d28106b14a59ab2d658605febe4a3bb; 5.10.241 <5.10.261; patch: 6.12.97; patch: 0; 6.17; patch: 5.15.212; 6.6.103 <6.6.145; e7d2dc2421e821e4045775e6dc226378328de6f6; patch: 6.18.40; fe2891a9c43ab87d1a210d61e6438ca6936e2f62 <671c3fcc2ad31c1311ea6414382a2d95104ae1b9; patch: 7.2-rc1; a431930c9bac518bf99d6b1da526a7f37ddee8d8 <c25d3c931a63e762fcaa9cb125b901c53b62403f; patch: 6.1.178; 5.4.297 <5.5; patch: 7.1.4; 6.1.149 <6.1.178; 67ecc81f6492275c9c54280532f558483c99c90e <c8dd112173c02adf539fe2ad34a45f5e0068780d; 384a66b89f9540a9a8cb0f48807697dfabaece4c <b6a481642ea1977be2f84dc08c5affd742c177e7; 5.15.190 <5.15.212; 6.15.11 <6.16; patch: 5.10.261; a431930c9bac518bf99d6b1da526a7f37ddee8d8 <607217f7ad419b53926f71e3f75001813bbc08ad; 6.16.2 <6.17; fc7f732984ec91f30be3e574e0644066d07f2b78; a1a60e79502279f996e55052f50cc14919020475 <fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1; 6.12.43 <6.12.97
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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