CVE-2026-90102NFSv4/pnfs: key the data server cache on the NFS version
- 7.5HighCVSS base score
- 0.70%Exploitation in 30 daysEPSS · top 47% 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: NFSv4/pnfs: key the data server cache on the NFS version nfs4_pnfs_ds_add() keys the per-net data server cache on the multipath address set alone, and struct nfs4_pnfs_ds records no version. That suffices for the files layout driver, which always connects with version 4, but flexfiles takes its version tuple from GETDEVICEINFO per device, and one address can legitimately serve both NFSv3 and NFSv4. Two deviceids on one address with different ds_versions[0].version therefore share a single nfs4_pnfs_ds, and whichever mirror connects first pins ds_clp to its own version. The other one is handed that client anyway, so it selects rpc_call_ops for a version the connection does not speak, and the mismatched sequence-slot handling dereferences NULL. Add the version to the cache key so the two cannot alias, giving each version its own nfs4_pnfs_ds and connection while both mirrors stay usable. Only the major version is compared, since that is what selects rpc_call_ops and rpc_ops; v4.0 and v4.1 keep sharing a client. The files layout driver passes the 4 it already hardcodes at connect time.
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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Received | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.70% · top 47% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < ffb100b0da0e217d5d63ce6fe092f9c29e59f7dd
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < 02e160922bc83cd25e346a028ed43cbdb0b57e1a
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < bc7aa9d8aff826031ffe25eba7f2f3acafcbf7a1
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < dd5bd091daa48c6ed8f9235ddf448aa288a0881f
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < f2994ba1263d9e88d3d9ae1d097c5cf811d4bfa5
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < 27f640cd92eebf5c2f64336be7ca24f4636390cb
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < bbc975cfb07a146843fde1126c43441e76177539
- affected d67ae825a59d639e4d8b82413af84d854617a87e – < 13c23c5cb977f66390795437fd3837887ce1fd75
- affected 4.0
- unaffected < 4.0
- 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/ffb100b0da0e217d5d63ce6fe092f9c29e59f7dd (opens in a new tab)
- https://git.kernel.org/stable/c/02e160922bc83cd25e346a028ed43cbdb0b57e1a (opens in a new tab)
- https://git.kernel.org/stable/c/bc7aa9d8aff826031ffe25eba7f2f3acafcbf7a1 (opens in a new tab)
- https://git.kernel.org/stable/c/dd5bd091daa48c6ed8f9235ddf448aa288a0881f (opens in a new tab)
- https://git.kernel.org/stable/c/f2994ba1263d9e88d3d9ae1d097c5cf811d4bfa5 (opens in a new tab)
- https://git.kernel.org/stable/c/27f640cd92eebf5c2f64336be7ca24f4636390cb (opens in a new tab)
- https://git.kernel.org/stable/c/bbc975cfb07a146843fde1126c43441e76177539 (opens in a new tab)
- https://git.kernel.org/stable/c/13c23c5cb977f66390795437fd3837887ce1fd75 (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-2026-81695 (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-2026-90102)Record last updated .