VYPR
High severity7.8NVD Advisory· Published Aug 19, 2025· Updated Jun 17, 2026

CVE-2025-38565

CVE-2025-38565

Description

In the Linux kernel, the following vulnerability has been resolved:

perf/core: Exit early on perf_mmap() fail

When perf_mmap() fails to allocate a buffer, it still invokes the event_mapped() callback of the related event. On X86 this might increase the perf_rdpmc_allowed reference counter. But nothing undoes this as perf_mmap_close() is never called in this case, which causes another reference count leak.

Return early on failure to prevent that.

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Affected products

202

Patches

Vulnerability mechanics

References

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