CVE-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.

What this means for your business

It affects Linux Kernel. It matters if your company, or a supplier that handles your data, runs it.
Attackers are already using it. CISA added it to its list of flaws used in real attacks on 15 September 2022.
FIRST's prediction model gives it a 48% chance of attack attempts being seen in the next 30 days, ranking above 98% of all known flaws.

What to do

1Check whether your company or your suppliers run Linux Kernel.
2If you do, follow CISA's required action below. No patch reference has been published yet.
3Treat it as urgent. US federal agencies must fix it by 6 October 2022. That deadline does not apply to private companies, but it shows how seriously CISA takes it.
4Because attackers have used it, check the affected systems for signs of a break-in, not only for the update.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

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Required action

Apply updates per vendor instructions.

CISA’s wording, unedited.

Scoring

CVSS: Not yet scored

Dates

Published: 2022-09-15
Added to KEV: 2022-09-15
Remediation due: 2022-10-06
Sources: CISA KEV