Answer in brief
CVE-2026-74349 records a High severity (CVSS 7.1) vulnerability in ocfs2: reject FITRIM ranges shorter than a cluster. 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 7.1. 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 | >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <d903d59c0315f59bdf0214b4f13d71c9feb2c45c || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <441abb77222f155e8d931dbabb465466db01cfd7 || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <e652d0f5108e447b22da4249bcd23dd1b63c73dd || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <346314bb0cc2fc52b50b73d6ecc62e0217455c2e || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <06c0a0431b9856506fcd9b2c1b0c6136567d756d || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <3fa7139b5f42731a61f78c42433adae13f9adc21 || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <2c13e02592b918be7725ab5965e01ef4e46c4b57 || >=aa89762c54800208d5afdcd8e6bf124818f17fe0 <ca1afd88f5eaaff9168e1466e5401385edf59543 | d903d59c0315f59bdf0214b4f13d71c9feb2c45c, 441abb77222f155e8d931dbabb465466db01cfd7, e652d0f5108e447b22da4249bcd23dd1b63c73dd, 346314bb0cc2fc52b50b73d6ecc62e0217455c2e, 06c0a0431b9856506fcd9b2c1b0c6136567d756d, 3fa7139b5f42731a61f78c42433adae13f9adc21, 2c13e02592b918be7725ab5965e01ef4e46c4b57, ca1afd88f5eaaff9168e1466e5401385edf59543 |
| Linux/Linuxgeneric | 3.14 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.