CVE-2013-2094: Linux Kernel Privilege Escalation Vulnerability

High severity, CVSS 8.4. Actively exploited: in CISA KEV since 2022-09-15. EPSS: 47.7% chance of exploitation in the next 30 days.

The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.

Affected products

• Linux Linux Kernel: before 3.0.75 (fixed in 3.0.75); from 3.1, before 3.2.45 (fixed in 3.2.45); from 3.3, before 3.4.42 (fixed in 3.4.42); from 3.5, before 3.8.9 (fixed in 3.8.9)

Published 2013-05-14. Last modified 2026-06-16.