drm/v3d: Fix global performance monitor reference counting

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Summary

CVECVE-2026-53141
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 09:16:31 UTC
Updated2026-06-25 09:16:31 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/v3d: Fix global performance monitor reference counting In the SET_GLOBAL ioctl, v3d_perfmon_find() bumps the reference count on the perfmon it returns, but v3d_perfmon_set_global_ioctl() and v3d_perfmon_delete() fail to release that reference on several paths: 1. v3d_perfmon_set_global_ioctl() leaks the reference on its error paths. 2. CLEAR_GLOBAL leaks both the find reference and the reference previously stashed in v3d->global_perfmon by the SET_GLOBAL ioctl that configured it. 3. Destroying a perfmon that is the current global perfmon leaks the reference stashed by the SET_GLOBAL ioctl. Release each of these references explicitly.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c6eabbab359c156669e10d5dec3e71e80ff09bd2 3e1947573140a57119294f0bff39ee18d93f23e1 git Not specified
CNA Linux Linux affected c6eabbab359c156669e10d5dec3e71e80ff09bd2 ed2eaf3b7b1820b690e4b896d344e00027526a25 git Not specified
CNA Linux Linux affected c6eabbab359c156669e10d5dec3e71e80ff09bd2 6bf7e2affc6e62da7add393d7f352d4040f5bc27 git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.36 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ed2eaf3b7b1820b690e4b896d344e00027526a25 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6bf7e2affc6e62da7add393d7f352d4040f5bc27 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3e1947573140a57119294f0bff39ee18d93f23e1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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