nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo nfsd4_ff_encode_getdeviceinfo() computes the da_addr_body reservation as 16 + netid_len + addr_len, but the subsequent xdr_encode_opaque() calls emit 8 + round_up(netid_len, 4) + round_up(addr_len, 4) bytes. The mismatch means the declared da_addr_body length exceeds the actual encoded data by 2-8 bytes on every flexfile GETDEVICEINFO reply, leaking stale reply-page content to the client and mis-aligning the subsequent version list decode. Use xdr_align_size() for each string length to match what xdr_encode_opaque() actually writes.
References
- https://git.kernel.org/stable/c/356decf074b82bac5564568203c12426dcea3470
- https://git.kernel.org/stable/c/15460c8e6c9bc92cda8f68bc419ac082300ab3d6
- https://git.kernel.org/stable/c/9be67a6be48ddf2ebaa98c0df671690b8f9666e7
- https://git.kernel.org/stable/c/88bce7e326c368d7df15126ccac537e54bebd467
- https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783
- https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0
- https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9
- https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647
European references
- ENISA EUVD · EUVD-2026-76585
- GCVE · GCVE-0-2026-89673
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 3f1a2b0b2d575f39ff0bedb5411822fe7446a805 < 356decf074b82bac5564568203c12426dcea3470 ; affected 19a648a07572c70fbe16faf0fafaf3dce9fd998a < 15460c8e6c9bc92cda8f68bc419ac082300ab3d6 ; affected 6d08bd22fa2941a4d5ef45ed115dd00e484a93d7 < 9be67a6be48ddf2ebaa98c0df671690b8f9666e7 ; affected 6372e2ee629894433fe6107d7048536a3280a284 < 88bce7e326c368d7df15126ccac537e54bebd467 ; affected 6372e2ee629894433fe6107d7048536a3280a284 < 74015b7be806ad9e21d46f7bd2831df280c6c783 ; affected 6372e2ee629894433fe6107d7048536a3280a284 < 41ebca28e17f84293650598f86bd69532ec1a8e0 |
| Linux · Linux | affected 6.6 ; unaffected 0 < 6.6 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 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 |