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Vulnerability record · CVE-2026-43150 · published 6 May 2026

CVE-2026-43150: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: perf/arm-cmn: Reject unsupported hardware configurations So far we've been fairly lax about accepting both unknown CMN models (at least with a warning), and unknown revisions of those which we do know, as although things do frequently change between releases, typically enough remains the same to be somewhat useful for at least some basic bringup checks. However, we also make assumptions of the maximum supported sizes and numbers of things in various places, and there's no guarantee that something new might not be bigger and lead to nasty array overflows. Make sure we only try to run on things that actually match our assumptions and so will not risk memory corruption. We have at least always failed on completely unknown node types, so update that error message for clarity and consistency too.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.6% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: perf/arm-cmn: Reject unsupported hardware configurations So far we've been fairly lax about accepting both unknown CMN models (at least with a warning), and unknown revisions of those which we do know, as although things do frequently change between releases, typically enough remains the same to be somewhat useful for at least some basic bringup checks. However, we also make assumptions of the maximum supported sizes and numbers of things in various places, and there's no guarantee that something new might not be bigger and lead to nasty array overflows. Make sure we only try to run on things that actually match our assumptions and so will not risk memory corruption. We have at least always failed on completely unknown node types, so update that error message for clarity and consistency too.

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/00d69f21ef2ab00e6156c764d89e2b3539eb2f33 Patch
https://git.kernel.org/stable/c/08c7eadd8a934a1968e1aeeee8b61b853b99fb3a Patch
https://git.kernel.org/stable/c/36c0de02575ce59dfd879eb4ef63d53a68bbf9ce Patch
https://git.kernel.org/stable/c/7e2c200010aa93fa78201da959b4ac6b9f8fed0b Patch
https://git.kernel.org/stable/c/a251d866f50b6a4c95901fa722025065679c2eca Patch
https://git.kernel.org/stable/c/d3e837e11ee9ed08df229272319199003ba00379 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43150), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.