# CVE-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.

- Page: https://www.vulneraibility.com/cve/CVE-2013-2094
- CVSS: 8.4
- Known exploited: yes, in CISA KEV since 2022-09-15; CISA due date 2022-10-06
- EPSS: 47.71% (percentile 98.9)
- Public exploit code: 3 on Exploit-DB · 7 GitHub proofs of concept (first 2013-05-14)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-05-01)
- Published: 2013-05-14

## Affected

- linux:linux_kernel

## References

- [advisory] http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html
- [advisory] http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
- [other] http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/04302.html
- [other] http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03652.html
- [other] http://lists.centos.org/pipermail/centos-announce/2013-May/019733.html
- [advisory] http://www.ubuntu.com/usn/USN-1826-1
- [other] http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03976.html
- [advisory] http://www.ubuntu.com/usn/USN-1838-1
- [other] https://bugzilla.redhat.com/show_bug.cgi?id=962792
- [other] https://github.com/torvalds/linux/commit/8176cced706b5e5d15887584150764894e94e02f
- [other] http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9
- [advisory] http://www.ubuntu.com/usn/USN-1828-1
- [other] http://lists.centos.org/pipermail/centos-announce/2013-May/019729.html
- [advisory] http://www.ubuntu.com/usn/USN-1827-1
- [advisory] http://www.ubuntu.com/usn/USN-1836-1
- [other] http://www.osvdb.org/93361
- [exploit] http://www.exploit-db.com/exploits/33589
- [advisory] http://rhn.redhat.com/errata/RHSA-2013-0830.html
- [other] http://news.ycombinator.com/item?id=5703758
- [other] http://www.openwall.com/lists/oss-security/2013/05/14/6
- [other] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8176cced706b5e5d15887584150764894e94e02f
- [advisory] http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00008.html
- [other] http://packetstormsecurity.com/files/121616/semtex.c
- [advisory] http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- [other] http://twitter.com/djrbliss/statuses/334301992648331267
- [other] http://www.reddit.com/r/netsec/comments/1eb9iw
- [advisory] http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00017.html
- [advisory] http://www.ubuntu.com/usn/USN-1825-1
- [advisory] http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00009.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-2094

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.