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CVE-2026-43248

vhost: move vdpa group bound check to vhost_vdpa

HIGH
7.8
CVSS Score
Published: May 6, 2026 at 11:28 AM UTC
Updated: October 30, 2026 at 01:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: vhost: move vdpa group bound check to vhost_vdpa Remove duplication by consolidating these here. This reduces the posibility of a parent driver missing them. While we're at it, fix a bug in vdpa_sim where a valid ASID can be assigned to a group equal to ngroups, causing an out of bound write.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.19 ≤ v < 6.12.756.13 ≤ v < 6.18.166.19 ≤ v < 6.19.65.19bda324fd037a6b0d44da5699574ce741ca161bc4
Vendor states this is fixed in 406db68f9cb976a8ddfafd631197264f2307e9c9 (fixed)
Vendor states this is fixed in 7441d35d14d9a3d66d925d90cb73c75394e6d454 (fixed)
Vendor states this is fixed in cd025c1e876b4e262e71398236a1550486a73ede (fixed)
Vendor states this is fixed in ddb57354634b6ba851b79da45f1de42c646f27d0 (fixed)
Vendor states this is fixed in 5.19 (unaffected)
Vendor states this is fixed in 6.12.75 (unaffected)
Vendor states this is fixed in 6.18.16 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

References (6)

Patch
Source: cverecord
https://git.kernel.org/stable/c/ddb57354634b6ba851b79da45f1de42c646f27d0
Patch
Source: cverecord
https://git.kernel.org/stable/c/7441d35d14d9a3d66d925d90cb73c75394e6d454
Patch
Source: cverecord
https://git.kernel.org/stable/c/406db68f9cb976a8ddfafd631197264f2307e9c9
Patch
Source: cverecord
https://git.kernel.org/stable/c/cd025c1e876b4e262e71398236a1550486a73ede
Source: cverecord
https://git.kernel.org/stable/c/566899af053246406f2faf931044d2b0af8f34d2
Source: cverecord
https://git.kernel.org/stable/c/69ec8dd6696069c2f18430d0e05f81d604484ee8

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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