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Vulnerabilities

Vulnerability · CVE-2013-2094

Linux Kernel Privilege Escalation Vulnerability

Published May 14, 2013 · catalog updated Jun 16, 2026 · Linux Kernel

Patch now

CVE-2013-2094 is in the CISA known-exploited catalog, due Oct 6, 2022. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.4
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
47.71%
Remediation
Remediation guidance
Affected products
cpe linux/linux kernel · vendor Linux Kernel · vendor n/a n/a

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernelversion unspecified
  • vendor Linux Kernelversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2013-2094

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2013-2094 is in the CISA known-exploited catalog, due Oct 6, 2022. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-189. EPSS 47.71%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 14, 2013 · Catalog

    Detected

    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.

  2. Sep 15, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Oct 6, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2013-2094

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2013-2094

    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.

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2013-2094

    30-day exploitation probability 47.7%

    first.org
  • Exploit DatabasePublic exploit reference25444

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference26131

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference33589

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDVulnerability recordCVE-2013-2094

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2013-2094

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.