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CVE-2013-2094

Linux Kernel Privilege Escalation

8.4 HIGHActively exploited (CISA KEV)Public exploitEPSS 47.7%
  1. Published14 May 2013
  2. Added to CISA KEV15 Sept 2022
  3. Remediation due6 Oct 2022
Actively exploited (CISA KEV)

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.

Added to KEV: 15 Sept 2022Federal remediation due: 6 Oct 2022

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel≥ 3.1 < 3.2.45 · ≥ 3.3 < 3.4.42 · ≥ 3.5 < 3.8.9 · < 3.0.75

Remediation

Fixed in
Linux Kernel≥ 3.2.45

References

and 20 more references

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Frequently asked

Is CVE-2013-2094 being actively exploited?

Yes. CVE-2013-2094 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Sept 2022.

How severe is CVE-2013-2094?

CVE-2013-2094 has a CVSS 3.1 base score of 8.4, rated high. EPSS estimates a 47.7% probability of exploitation.

Which products are affected by CVE-2013-2094?

Affected products include Linux Kernel.

How do I fix CVE-2013-2094?

Upgrade affected software to a fixed version, for example Linux Kernel 3.2.45 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2013-2094 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.