CVE-2025-38565

HIGH

MEDIUM Priority: 0.01 BB Relevance: 41/100

Published: 2025-08-19 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: High

I: High

A: High

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.

Affected Software (12)

Vendor	Product	Version
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 5ffda7f3ed76ec8defc19d985e33b3b82ba07839
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 9b90a48c7de828a15c7a4fc565d46999c6e22d6b
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < de85e72598d89880a02170a1cbc27b35a7d978a9
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 27d44145bd576bbef9bf6165bcd78128ec3e6cbd
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < f41e9eba77bf97626e04296dc5677d02816d2432
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 92043120a2e992800580855498ab8507e1b22db9
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 163b0d1a209fe0df5476c1df2330ca12b55abf92
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 7ff8521f30c4c2fcd4e88bd7640486602bf8a650
Linux	Linux	1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb < 07091aade394f690e7b655578140ef84d0e8d7b0
Linux	Linux	4.0
debian	debian_linux	11.0
linux	linux_kernel	4.0 – 5.4.297