{"cve":"CVE-2025-38565","nvd":{"published":"2025-08-19T17:15:33.077","modified":"2026-06-17T09:17:07.317","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Exit early on perf_mmap() fail\n\nWhen perf_mmap() fails to allocate a buffer, it still invokes the\nevent_mapped() callback of the related event. On X86 this might increase\nthe perf_rdpmc_allowed reference counter. But nothing undoes this as\nperf_mmap_close() is never called in this case, which causes another\nreference count leak.\n\nReturn early on failure to prevent that.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/07091aade394f690e7b655578140ef84d0e8d7b0","https://git.kernel.org/stable/c/163b0d1a209fe0df5476c1df2330ca12b55abf92","https://git.kernel.org/stable/c/27d44145bd576bbef9bf6165bcd78128ec3e6cbd","https://git.kernel.org/stable/c/5ffda7f3ed76ec8defc19d985e33b3b82ba07839","https://git.kernel.org/stable/c/7ff8521f30c4c2fcd4e88bd7640486602bf8a650"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:06:45.861874017+00:00"},"epss":{"cve":"CVE-2025-38565","score":0.00192,"percentile":0.08903,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}