vhost-scsi: protect vq->log_used with vq->mutex (Linux Linux)

CVE-2025-38074
HIGH 8.8

En bref

Source
NVD
EPSS
EPSS 0.20 % · centile 10 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: vhost-scsi: protect vq->log_used with vq->mutex The vhost-scsi completion path may access vq->log_base when vq->log_used is already set to false. vhost-thread QEMU-thread vhost_scsi_complete_cmd_work() -> vhost_add_used() -> vhost_add_used_n() if (unlikely(vq->log_used)) QEMU disables vq->log_used via VHOST_SET_VRING_ADDR. mutex_lock(&vq->mutex); vq->log_used = false now! mutex_unlock(&vq->mutex); QEMU gfree(vq->log_base) log_used() -> log_write(vq->log_base) Assuming the VMM is QEMU. The vq->log_base is from QEMU userpace and can be reclaimed via gfree(). As a result, this causes invalid memory writes to QEMU userspace. The control queue path has the same issue.

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)
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 057cbf49a1f08297877e46c82f707b1bfea806a8 < 80cf68489681c165ded460930e391b1eb37b5f6f ; affected 057cbf49a1f08297877e46c82f707b1bfea806a8 < 8312a1ccff1566f375191a89b9ba71b6eb48a8cd ; affected 057cbf49a1f08297877e46c82f707b1bfea806a8 < 59614c5acf6688f7af3c245d359082c0e9e53117 ; affected 057cbf49a1f08297877e46c82f707b1bfea806a8 < ca85c2d0db5f8309832be45858b960d933c2131c ; affected 057cbf49a1f08297877e46c82f707b1bfea806a8 < bd8c9404e44adb9f6219c09b3409a61ab7ce3427 ; affected 057cbf49a1f08297877e46c82f707b1bfea806a8 < c0039e3afda29be469d29b3013d7f9bdee136834
Linux · Linuxaffected 3.6 ; unaffected 0 < 3.6 ; unaffected 5.10.240 ≤ 5.10.* ; unaffected 5.15.189 ≤ 5.15.* ; unaffected 6.1.146 ≤ 6.1.* ; unaffected 6.6.93 ≤ 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