Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject FITRIM ranges shorter than a cluster ocfs2_trim_mainbm() trims the global bitmap in cluster units, but its too-short range validation only checks sb->s_blocksize. On filesystems with a cluster size larger than the block size, a FITRIM range that is at least one block but shorter than one cluster is accepted and shifted down to len == 0. The later start + len - 1 and len -= ... arithmetic then underflows and can drive trimming past the requested range. Reject ranges shorter than s_clustersize instead. That preserves the existing -EINVAL behavior for requests that cannot discard even one allocation unit and keeps zero-cluster trims out of the group walk.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before d903d59c0315f59bdf0214b4f13d71c9feb2c45c; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before 441abb77222f155e8d931dbabb465466db01cfd7; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before e652d0f5108e447b22da4249bcd23dd1b63c73dd; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before 346314bb0cc2fc52b50b73d6ecc62e0217455c2e; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before 06c0a0431b9856506fcd9b2c1b0c6136567d756d; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before 3fa7139b5f42731a61f78c42433adae13f9adc21; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before 2c13e02592b918be7725ab5965e01ef4e46c4b57; affected aa89762c54800208d5afdcd8e6bf124818f17fe0 before ca1afd88f5eaaff9168e1466e5401385edf59543 |
| Linux / Linux | affected 3.14; unaffected 0 before 3.14; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d903d59c0315f59bdf0214b4f13d71c9feb2c45c
- https://git.kernel.org/stable/c/441abb77222f155e8d931dbabb465466db01cfd7
- https://git.kernel.org/stable/c/e652d0f5108e447b22da4249bcd23dd1b63c73dd
- https://git.kernel.org/stable/c/346314bb0cc2fc52b50b73d6ecc62e0217455c2e
- https://git.kernel.org/stable/c/06c0a0431b9856506fcd9b2c1b0c6136567d756d
- https://git.kernel.org/stable/c/3fa7139b5f42731a61f78c42433adae13f9adc21
- https://git.kernel.org/stable/c/2c13e02592b918be7725ab5965e01ef4e46c4b57
- https://git.kernel.org/stable/c/ca1afd88f5eaaff9168e1466e5401385edf59543
ADP enrichment
No English description supplied.
No references supplied.