cifs: validate idmap key payload length (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: cifs: validate idmap key payload length The cifs.idmap key type stores its payload length in key->datalen, which is limited to U16_MAX. Accepting a larger key payload truncates the recorded length and can make later users interpret the payload using inconsistent bounds. Reject oversized preparsed payloads before allocating or copying them. This keeps key->datalen consistent with the stored data for both inline and separately allocated idmap payloads.
References
- https://git.kernel.org/stable/c/eeac976b74b4f697cfc517187b7cbfd72652dbbc
- https://git.kernel.org/stable/c/125b05ac8ca8758950e4369c1542d57a162f504c
- https://git.kernel.org/stable/c/945f6cde6bcf8f08f6fa5df8882b1b9582e55efa
- https://git.kernel.org/stable/c/3a4a34a732e8a08309eed0a74314dbd9f2f1c972
- https://git.kernel.org/stable/c/6cfeef221ac00d63c07f6122f58e6159bde69ca0
- https://git.kernel.org/stable/c/8b12f65d7caf16d124098cb4895a203367d35b57
- https://git.kernel.org/stable/c/455488cd5054bcc59db40fa1cc2c004031a5b2a5
European references
- ENISA EUVD · EUVD-2026-86172
- GCVE · GCVE-0-2026-93785
CERT-FR advisories
- CERTFR-2026-AVI-1432 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 21fed0d5b763b94a7d1568c27d0cce892ab8d43e < eeac976b74b4f697cfc517187b7cbfd72652dbbc ; affected 21fed0d5b763b94a7d1568c27d0cce892ab8d43e < 125b05ac8ca8758950e4369c1542d57a162f504c ; affected 21fed0d5b763b94a7d1568c27d0cce892ab8d43e < 945f6cde6bcf8f08f6fa5df8882b1b9582e55efa ; affected 21fed0d5b763b94a7d1568c27d0cce892ab8d43e < 3a4a34a732e8a08309eed0a74314dbd9f2f1c972 ; affected 21fed0d5b763b94a7d1568c27d0cce892ab8d43e < 6cfeef221ac00d63c07f6122f58e6159bde69ca0 ; affected 21fed0d5b763b94a7d1568c27d0cce892ab8d43e < 8b12f65d7caf16d124098cb4895a203367d35b57 |
| Linux · Linux | affected 3.2 ; unaffected 0 < 3.2 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |