CVE-2026-64290

iommufd: Break the loop on failure in iommufd_fault_fops_read()

MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd: Break the loop on failure in iommufd_fault_fops_read() On a copy_to_user() failure inside the inner list_for_each_entry, only the inner loop breaks; the outer while re-fetches the just-restored fault group and retries the failing copy_to_user() forever, spinning the reader at 100% CPU with fault->mutex held. Check rc after the inner loop and break the outer while as well.

Faiblesses (CWE)

  • CWE-835 — Boucle dont la condition de sortie est inatteignable (boucle infinie)

Références

Scores

VersionScoreVecteurÉvalué par
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 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < a38e0714affc5c0bbb40cba5a65d6d32a5e72a71 ; affected 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < 5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8 ; affected 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < f66c16b175509642ee7082df57c9bf3deaebae1a ; affected 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < 172fc8b19825a0f5884c38f2289188284e2d45ee
Linux · Linuxaffected 6.11 ; unaffected 0 < 6.11 ; unaffected 6.12.101 ≤ 6.12.* ; unaffected 6.18.39 ≤ 6.18.* ; unaffected 7.1.4 ≤ 7.1.* ; unaffected 7.2 ≤ *

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