KVM: nVMX: Hide shadow VMCS right after VMCLEAR (Linux Linux)

CVE-2026-64562
HIGH 8.8

En bref

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

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Hide shadow VMCS right after VMCLEAR free_nested() frees the shadow VMCS while vmcs01 still points to it. But because it is asynchronous with respect to loaded_vmcs_clear(), the vCPU might migrate before the pointer is cleared and __loaded_vmcs_clear() may then execute VMCLEAR. The VMCS needs to stay attached until its explicit VMCLEAR completes, but then it can be hidden and the page safely freed.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 < b82c3144d8264265448292ca406f60bafeba3b6f ; affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 < 4f50e6aec16f69627dbad5704d1e90a255d766a7 ; affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 < dc3eecfa219ebc9d01eaf7d1abd1441efe884dab ; affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 < af56298e9d86e6098cd1d2e155cb2949b7c45412 ; affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 < 589419470030a89f16cf19300658b6dc644ca946 ; affected 355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 < 8001d2ce9d9bd09118ce523aef595aa094573ae3
Linux · Linuxaffected 4.9 ; unaffected 0 < 4.9 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 6.6.*

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