CVE-2026-68422btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 88% 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: btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots() If we have an unexpected reloc_root for our root, we jump to the out label but never drop the reference we obtained for root, resulting in a leak. Add a missing btrfs_put_root() call.
Timeline
ID reserved
By Linux
- 11 days later
· 11 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < f89df93e8aefa4c1c813f835559f2ac727f79766
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < 3f586b4c92e4272fcd01bf0db0590b63acf3e85b
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < b3d39b03799600c76c33486e2d29b73a771023db
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < 72f673d1c1deb819554d3e7e154f6d84301eb735
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < 60a23d4ea169e27403f3bb023bb98036797c0206
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < 7591d1727067d6063247901ad25c4bdc4e5695c4
- affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 – < ce6050bafb4e33377dc17fcc357736bfc351180c
- affected 5.13
- unaffected < 5.13
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.148 – ≤ 6.6.*
- unaffected 6.12.101 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/f89df93e8aefa4c1c813f835559f2ac727f79766 (opens in a new tab)
- https://git.kernel.org/stable/c/3f586b4c92e4272fcd01bf0db0590b63acf3e85b (opens in a new tab)
- https://git.kernel.org/stable/c/b3d39b03799600c76c33486e2d29b73a771023db (opens in a new tab)
- https://git.kernel.org/stable/c/72f673d1c1deb819554d3e7e154f6d84301eb735 (opens in a new tab)
- https://git.kernel.org/stable/c/60a23d4ea169e27403f3bb023bb98036797c0206 (opens in a new tab)
- https://git.kernel.org/stable/c/7591d1727067d6063247901ad25c4bdc4e5695c4 (opens in a new tab)
- https://git.kernel.org/stable/c/ce6050bafb4e33377dc17fcc357736bfc351180c (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-2026-55608 (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-2026-68422)Record last updated .