io_uring/kbuf: reallocate buf lists on upgrade (Linux Linux)

CVE-2025-21836
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.25 % · centile 17 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: reallocate buf lists on upgrade IORING_REGISTER_PBUF_RING can reuse an old struct io_buffer_list if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field should stay stable after publish. Always reallocate it instead.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 2fcabce2d7d34f69a888146dab15b36a917f09d4 < 146a185f6c05ee263db715f860620606303c4633 ; affected 2fcabce2d7d34f69a888146dab15b36a917f09d4 < 7d0dc28dae836caf7645fef62a10befc624dd17b ; affected 2fcabce2d7d34f69a888146dab15b36a917f09d4 < 2a5febbef40ce968e295a7aeaa5d5cbd9e3e5ad4 ; affected 2fcabce2d7d34f69a888146dab15b36a917f09d4 < 8802766324e1f5d414a81ac43365c20142e85603
Linux · Linuxaffected 5.19 ; unaffected 0 < 5.19 ; unaffected 6.6.79 ≤ 6.6.* ; unaffected 6.12.16 ≤ 6.12.* ; unaffected 6.13.4 ≤ 6.13.* ; unaffected 6.14 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD