perf/arm-cmn: Reject unsupported hardware configurations

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Summary

CVECVE-2026-43150
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:32 UTC
Updated2026-05-08 13:16:41 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.000160000 probability, percentile 0.036060000 (date 2026-05-12)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 28fa550a49e818d6445e787f584759b1bf21d9d4 7e2c200010aa93fa78201da959b4ac6b9f8fed0b git Not specified
CNA Linux Linux affected 7819e05a0dceac20c5ff78ec9b252faf3b76b824 d3e837e11ee9ed08df229272319199003ba00379 git Not specified
CNA Linux Linux affected 7819e05a0dceac20c5ff78ec9b252faf3b76b824 00d69f21ef2ab00e6156c764d89e2b3539eb2f33 git Not specified
CNA Linux Linux affected 7819e05a0dceac20c5ff78ec9b252faf3b76b824 08c7eadd8a934a1968e1aeeee8b61b853b99fb3a git Not specified
CNA Linux Linux affected 7819e05a0dceac20c5ff78ec9b252faf3b76b824 a251d866f50b6a4c95901fa722025065679c2eca git Not specified
CNA Linux Linux affected 7819e05a0dceac20c5ff78ec9b252faf3b76b824 36c0de02575ce59dfd879eb4ef63d53a68bbf9ce git Not specified
CNA Linux Linux affected 6.5 Not specified
CNA Linux Linux unaffected 6.5 semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/00d69f21ef2ab00e6156c764d89e2b3539eb2f33 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/08c7eadd8a934a1968e1aeeee8b61b853b99fb3a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d3e837e11ee9ed08df229272319199003ba00379 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a251d866f50b6a4c95901fa722025065679c2eca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7e2c200010aa93fa78201da959b4ac6b9f8fed0b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/36c0de02575ce59dfd879eb4ef63d53a68bbf9ce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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