vhost_vdpa: assign irq bypass producer token correctly (Linux Linux)

CVE-2024-47748
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 12 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: vhost_vdpa: assign irq bypass producer token correctly We used to call irq_bypass_unregister_producer() in vhost_vdpa_setup_vq_irq() which is problematic as we don't know if the token pointer is still valid or not. Actually, we use the eventfd_ctx as the token so the life cycle of the token should be bound to the VHOST_SET_VRING_CALL instead of vhost_vdpa_setup_vq_irq() which could be called by set_status(). Fixing this by setting up irq bypass producer's token when handling VHOST_SET_VRING_CALL and un-registering the producer before calling vhost_vring_ioctl() to prevent a possible use after free as eventfd could have been released in vhost_vring_ioctl(). And such registering and unregistering will only be done if DRIVER_OK is set.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

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 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 < 0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0 ; affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 < 927a2580208e0f9b0b47b08f1c802b7233a7ba3c ; affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 < ec5f1b54ceb23475049ada6e7a43452cf4df88d1 ; affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 < ca64edd7ae93402af2596a952e0d94d545e2b9c0 ; affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 < fae9b1776f53aab93ab345bdbf653b991aed717d ; affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 < 7cf2fb51175cafe01df8c43fa15a06194a59c6e2
Linux · Linuxaffected 5.9 ; unaffected 0 < 5.9 ; unaffected 5.10.227 ≤ 5.10.* ; unaffected 5.15.168 ≤ 5.15.* ; unaffected 6.1.113 ≤ 6.1.* ; unaffected 6.6.54 ≤ 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