- —Not scoredno CVSS score yet
- 0.19%Exploitation in 30 daysEPSS · top 91% 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 missing metadata reservation for large xattrs [BUG] lsetxattr() panics the kernel when setting a large xattr value on a fragmented filesystem where the file already has an external xattr block. [CAUSE] ocfs2_calc_xattr_set_need() never reserves metadata blocks for a new xattr value's extent tree when the file already has an external xattr block. The not_found path leaves meta_add at zero, so meta_ac is NULL when ocfs2_xattr_extend_allocation() runs. A new value root has room for a single extent record. On a fragmented filesystem, the allocator cannot satisfy the xattr value in one contiguous run, so each non-contiguous run requires its own extent record. When the value root's extent list is full and meta_ac is NULL, ocfs2_add_clusters_in_btree() returns RESTART_META, and ocfs2_xattr_extend_allocation() hits BUG_ON(why == RESTART_META). [FIX] The case where no xattr block exists yet already calls ocfs2_extend_meta_needed(&def_xv.xv.xr_list) to reserve value tree metadata. Add the same reservation to the case where an xattr block already exists, making the two cases consistent. Replace the BUG_ON with a -ENOSPC return so that if RESTART_META is returned despite the reservation, the error propagates to userspace instead of panicking the kernel.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 45 days later
· 45 days 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < 743ac908282ac97ef6e73ac3a92df2cc8ecb7479
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < 04ba24bce61c917b5b3009f0db470cbb72e26a0d
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < b4663405ae29d36011cd712d243456f3f9ab700d
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < 6a009f1e61b11d9e23d3c5aa1dacfb010945da45
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < 6176313622e34fa3e2b66b9d0682d1e1c6b365c5
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < a3ccb57086dd7652d5ecb826486144198a98a8e9
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < 50f0cbec45b0f3fd7e1263d01916518dbf31eb3f
- affected a78f9f4668949a6588b8872f162e86685c63d023 – < 0cdc7dde00ec63ac714271fa8b2918d630b8da1a
- affected 92f61d8a31e270f9391e7bcc0ac638bd4262a8e0
- affected 2.6.34.2 – < 2.6.35
- affected 2.6.35
- unaffected < 2.6.35
- unaffected 5.10.267 – ≤ 5.10.*
- unaffected 5.15.218 – ≤ 5.15.*
- unaffected 6.1.185 – ≤ 6.1.*
- unaffected 6.6.154 – ≤ 6.6.*
- unaffected 6.12.106 – ≤ 6.12.*
- unaffected 6.18.47 – ≤ 6.18.*
- unaffected 7.1.11 – ≤ 7.1.*
- unaffected 7.2.1 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References9
- https://git.kernel.org/stable/c/743ac908282ac97ef6e73ac3a92df2cc8ecb7479 (opens in a new tab)
- https://git.kernel.org/stable/c/04ba24bce61c917b5b3009f0db470cbb72e26a0d (opens in a new tab)
- https://git.kernel.org/stable/c/b4663405ae29d36011cd712d243456f3f9ab700d (opens in a new tab)
- https://git.kernel.org/stable/c/6a009f1e61b11d9e23d3c5aa1dacfb010945da45 (opens in a new tab)
- https://git.kernel.org/stable/c/b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec (opens in a new tab)
- https://git.kernel.org/stable/c/6176313622e34fa3e2b66b9d0682d1e1c6b365c5 (opens in a new tab)
- https://git.kernel.org/stable/c/a3ccb57086dd7652d5ecb826486144198a98a8e9 (opens in a new tab)
- https://git.kernel.org/stable/c/50f0cbec45b0f3fd7e1263d01916518dbf31eb3f (opens in a new tab)
- https://git.kernel.org/stable/c/0cdc7dde00ec63ac714271fa8b2918d630b8da1a (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-2026-71244 (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-2026-80809)Record last updated .