What’s Vulnerable › Vulnerabilities

CVE-2026-43248: vhost: move vdpa group bound check to vhost_vdpa

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-10-30
• Weakness: CWE-787

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 products

• Linux kernel: from 5.19 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6 — fixed in 6.12.75, 6.18.16, 6.19.6
• Linux: 5.19 — fixed in 7.0

How to fix

Upgrade to a fixed version: Linux kernel 6.12.75, 6.18.16, 6.19.6; Linux 7.0. Check the vendor advisory for mitigations.

References

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

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