CVE-2013-2094: Linux Kernel Privilege Escalation Vulnerability
Affects Linux KernelSource CISA KEV
Exploited in the wild · KEV due 6 Oct 2022 · public exploit available (Exploit-DB) · 47% EPSS : apply the vendor's fix or mitigations to Linux Kernel now.
Data as of 10/24/2026, 22:15:59 UTC
- Exploitation
Actively exploited – in CISA KEV since 09/15/2022
- KEV deadline
- 10/06/2022 US federal agencies must patch by this date; a sensible deadline for everyone else.
- EPSS
- 47.7% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Public exploits
- 3 Exploit-DB entriesPublic attack or detection tooling exists; see Public exploits below.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat to do
CISA required action
Apply updates per vendor instructions.
Public exploits and detection
Exploit-DB
- Linux Kernel 3.2.0-23/3.5.0-23 (Ubuntu 12.04/12.04.1/12.04.2 x64) - 'perf_swevent_init' Local Privilege Escalation (3)2014-05-31 · verified (opens in a new tab)
- Linux Kernel < 3.8.9 (x86-64) - 'perf_swevent_init' Local Privilege Escalation (2)2013-06-11 · verified (opens in a new tab)
- Linux Kernel 2.6.32 < 3.x (CentOS 5/6) - 'PERF_EVENTS' Local Privilege Escalation (1)2013-05-14 (opens in a new tab)
Public tooling indexed from Metasploit Framework, Exploit-DB and ProjectDiscovery nuclei-templates. Its existence raises the odds of exploitation; it does not confirm attacks.
Description
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.
Weaknesses
- CWE-189Numeric Errors (opens in a new tab)
Category
Weaknesses in this category are related to improper calculation or conversion of numbers.
MITRE does not allow mapping vulnerabilities to this entry; it groups weaknesses rather than naming one.