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[ CVE-2013-2094 · Published 14 May 2013 ]

Linux Kernel Privilege Escalation Vulnerability

Exploited · CISA KEV CVSS 8.4 EPSS 48%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-09-15
  • EPSS: 48% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

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.

CISA: Linux kernel fails to check all 64 bits of attr.config passed by user space, resulting to out-of-bounds access of the perf_swevent_enabled array in sw_perf_event_destroy(). Explotation allows for privilege escalation.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 6 Oct 2022): Apply updates per vendor instructions.

[ References ]References