KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits (Linux Linux)

CVE-2026-64106
CRITICAL 9.0

En bref

Source
NVD
EPSS
EPSS 0.15 % · centile 4 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits Userspace can restore an ITS Device Table Entry whose Size field encodes more EventID bits than the virtual ITS supports. The live MAPD path rejects that state, but vgic_its_restore_dte() accepts it and stores the out-of-range value in dev->num_eventid_bits. Reject restored DTEs with num_eventid_bits > VITS_TYPER_IDBITS before allocating the device. This mirrors the MAPD check and prevents the restored state from reaching vgic_its_restore_itt(), where the unchecked value can be converted into an oversized scan_its_table() range.

Faiblesses (CWE)

  • CWE-20 — Validation d'entrée incorrecte

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.0CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:HLinux
CVSS 3.1CRITICAL 9.0CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 57a9a117154c93539e33161dd318e6aeb8c04efa < 1716b7fea2ead941a0dfac06c4504a3437cdf00d ; affected 57a9a117154c93539e33161dd318e6aeb8c04efa < dab9f93251b2c86a033de6098d0c73afddd55d4a ; affected 57a9a117154c93539e33161dd318e6aeb8c04efa < b94538186a3eae3763b8f96dacd610920a865aa7 ; affected 57a9a117154c93539e33161dd318e6aeb8c04efa < 0680f511926589206f81f57f76ce131d7741a316 ; affected 57a9a117154c93539e33161dd318e6aeb8c04efa < 8bcd15b690a390241179516af1b6ae49ebfd9d95 ; affected 57a9a117154c93539e33161dd318e6aeb8c04efa < 9ce754ed8e7ab4e3999767ce1505f85c449ccb07
Linux · Linuxaffected 4.12 ; unaffected 0 < 4.12 ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.142 ≤ 6.6.* ; unaffected 6.12.92 ≤ 6.12.* ; unaffected 6.18.34 ≤ 6.18.*

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