{"apiVersion":"1.0","identifier":"CVE-2026-74349","description":"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.","publishedAt":"2026-08-15T06:22:36","lastModifiedAt":"2026-08-17T06:19:29","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74349","cvssScore":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","epssProbability":0.00126,"riskScore":0.72,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74349","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74349","en":"https://www.redsauce.net/en/cves/CVE-2026-74349","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74349","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74349","de":"https://www.redsauce.net/de/cves/CVE-2026-74349","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74349","el":"https://www.redsauce.net/el/cves/CVE-2026-74349"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74349"}}