Answer in brief
CVE-2026-64361 records a High severity (CVSS 7.8) vulnerability in hfs/hfsplus: fix u32 overflow in check_and_correct_requested_length. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=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 | c8dd112173c02adf539fe2ad34a45f5e0068780d, fc9d1447ca3cdc78d2e4ace1ce1f3a7c77ca08b1, 671c3fcc2ad31c1311ea6414382a2d95104ae1b9, b6a481642ea1977be2f84dc08c5affd742c177e7, 7399c3baee7bb622a92f0b895cd4d3009a693f2b, 607217f7ad419b53926f71e3f75001813bbc08ad, c25d3c931a63e762fcaa9cb125b901c53b62403f, 966cb76fb2857a4242cab6ea2ea17acf818a3da7, 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 5.5, 6.16, 6.17 |
| Linux/Linuxgeneric | 6.17 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.