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Vulnerability record · CVE-2026-43248 · published 6 May 2026

CVE-2026-43248: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.13% · top 97.9% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/406db68f9cb976a8ddfafd631197264f2307e9c9 Patch
https://git.kernel.org/stable/c/7441d35d14d9a3d66d925d90cb73c75394e6d454 Patch
https://git.kernel.org/stable/c/cd025c1e876b4e262e71398236a1550486a73ede Patch
https://git.kernel.org/stable/c/ddb57354634b6ba851b79da45f1de42c646f27d0 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43248), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.