CVE-2026-72162ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
- 7.8HighCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected dcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 – < c88226315aec298894ec57e532f5e95f3b09e874
- affected dcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 – < c286319746cef02bcce7384fda3a3f08989070d2
- affected dcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 – < 720fb324cf0f5116318cae7f75cb393d118ffb67
- affected dcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 – < 671889c553ea55e2da6a4f3b15f4c0fa40f2f0d1
- affected dcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 – < 858aa4965ffa8c0d4bb5dd835ac4f1c9a1dcab85
- affected dcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 – < 452a8467be8143747292218212671deeb186d2ae
- affected 2.6.22
- unaffected < 2.6.22
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/c88226315aec298894ec57e532f5e95f3b09e874 (opens in a new tab)
- https://git.kernel.org/stable/c/c286319746cef02bcce7384fda3a3f08989070d2 (opens in a new tab)
- https://git.kernel.org/stable/c/720fb324cf0f5116318cae7f75cb393d118ffb67 (opens in a new tab)
- https://git.kernel.org/stable/c/671889c553ea55e2da6a4f3b15f4c0fa40f2f0d1 (opens in a new tab)
- https://git.kernel.org/stable/c/858aa4965ffa8c0d4bb5dd835ac4f1c9a1dcab85 (opens in a new tab)
- https://git.kernel.org/stable/c/452a8467be8143747292218212671deeb186d2ae (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-58920 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-72162)Record last updated .