CVE-2026-90318fat: release buffer head after rebuilding parent
- —Not scoredno CVSS score yet
- 0.22%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: fat: release buffer head after rebuilding parent fat_scan_logstart() leaves the matching directory entry's buffer head in sinfo.bh for the caller to release, just like fat_scan(). fat_rebuild_parent() uses the directory entry to rebuild the parent inode for the nostale_ro NFS export path, but does not release sinfo.bh after a successful scan. Release it once fat_build_inode() has consumed the directory entry data.
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)
- 0.22% · top 88% 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 f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < 5e44b6944e11fd6647f028219ad0be4e85e9acee
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < d2a86329152c69a6200c15b2bf618755f8563826
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < 0f18d712ba9c980e05b7e33a27cde4fe3ed2d393
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < e38587d98d1ceac608420052c0cdd901d25878f3
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < c6a67aa438179cad40f8ae45469e304338d65c0a
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < 571ea4263d69df1b48578e4314a828ecd0604755
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < 7565e44507634514e3e1899d3acad3de43f7a2c1
- affected f1e6fb0ab451dae8523fbb8c119a653b2730e938 – < 83e98dbf19ab64e8528e101e20f8d50e1aaa68a8
- affected 3.10
- unaffected < 3.10
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- 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
References8
- https://git.kernel.org/stable/c/5e44b6944e11fd6647f028219ad0be4e85e9acee (opens in a new tab)
- https://git.kernel.org/stable/c/d2a86329152c69a6200c15b2bf618755f8563826 (opens in a new tab)
- https://git.kernel.org/stable/c/0f18d712ba9c980e05b7e33a27cde4fe3ed2d393 (opens in a new tab)
- https://git.kernel.org/stable/c/e38587d98d1ceac608420052c0cdd901d25878f3 (opens in a new tab)
- https://git.kernel.org/stable/c/c6a67aa438179cad40f8ae45469e304338d65c0a (opens in a new tab)
- https://git.kernel.org/stable/c/571ea4263d69df1b48578e4314a828ecd0604755 (opens in a new tab)
- https://git.kernel.org/stable/c/7565e44507634514e3e1899d3acad3de43f7a2c1 (opens in a new tab)
- https://git.kernel.org/stable/c/83e98dbf19ab64e8528e101e20f8d50e1aaa68a8 (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-2026-81979 (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-2026-90318)Record last updated .