{"apiVersion":"1.0","identifier":"CVE-2026-72162","description":"In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec [BUG] On-disk corruption setting l_next_free_rec to 0 in an inode-s embedded extent list triggers a UBSAN panic on the next write to that file. [CAUSE] ocfs2_sum_rightmost_rec() computes i = le16_to_cpu(el->l_next_free_rec) - 1 and accesses el->l_recs[i] without validating i. When l_next_free_rec is 0, i becomes -1; when l_next_free_rec exceeds l_count, i falls past the end of the array. Either case violates the __counted_by_le(l_count) annotation on l_recs[] and triggers UBSAN. [FIX] Validate the inode-s embedded extent list when the inode is read, in ocfs2_validate_inode_block(): l_count must be non-zero and no larger than the inode block can hold, and l_next_free_rec must not exceed l_count. A corrupt list is rejected at read time, before the b-tree code can index l_recs[] out of bounds.","publishedAt":"2026-08-15T06:21:34","lastModifiedAt":"2026-08-18T07:16:53","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72162","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00162,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72162","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72162","en":"https://www.redsauce.net/en/cves/CVE-2026-72162","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72162","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72162","de":"https://www.redsauce.net/de/cves/CVE-2026-72162","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72162","el":"https://www.redsauce.net/el/cves/CVE-2026-72162"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72162"}}