Answer in brief
CVE-2026-64361 records a Unknown severity 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.
Answer in brief
CVE-2026-64361 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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.
| 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
Aug 5, 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.
A CVSS score is not reported in the current record. 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.
| 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
Aug 5, 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.