CVE-2026-90262btrfs: retry verity reads for not-uptodate Merkle folios
- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% 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: retry verity reads for not-uptodate Merkle folios btrfs_read_merkle_tree_page() can find a folio in the mapping that is not uptodate. After taking the folio lock, the current code treats that state as a read error and returns -EIO. That can make a previous transient read failure sticky. If the failed read left a not-uptodate folio in the mapping, later callers find that folio and fail instead of retrying the read. Keep the existing page-cache insertion and locking order, but retry the Merkle item read when a not-uptodate folio is found in the mapping. Also unlock the folio when read_key_bytes() fails so that a later caller can lock it and retry the read.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 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)
- 0.20% · top 90% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 06ed09351b67eb1114ae106a87a0ee3ea9adb3db – < 90e9eae1b5907fa36620ffb7f4f1a4afa9333427
- affected 06ed09351b67eb1114ae106a87a0ee3ea9adb3db – < c1fa005cdf3b7ff14cdfd7d512830088a3fc256b
- affected 06ed09351b67eb1114ae106a87a0ee3ea9adb3db – < 12b6d1a1715cbced2e445ca353f9c9987b8636e2
- affected 06ed09351b67eb1114ae106a87a0ee3ea9adb3db – < 81241f734f0f662378f5ffc53882b012923e6fe5
- affected 06ed09351b67eb1114ae106a87a0ee3ea9adb3db – < 8cc569696dac51fc62bb39b3b8f530582b916d29
- affected 6.6
- unaffected < 6.6
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/90e9eae1b5907fa36620ffb7f4f1a4afa9333427 (opens in a new tab)
- https://git.kernel.org/stable/c/c1fa005cdf3b7ff14cdfd7d512830088a3fc256b (opens in a new tab)
- https://git.kernel.org/stable/c/12b6d1a1715cbced2e445ca353f9c9987b8636e2 (opens in a new tab)
- https://git.kernel.org/stable/c/81241f734f0f662378f5ffc53882b012923e6fe5 (opens in a new tab)
- https://git.kernel.org/stable/c/8cc569696dac51fc62bb39b3b8f530582b916d29 (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-2026-81855 (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-2026-90262)Record last updated .