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…
- 8.4HighCVSS base score
- 47.7%Exploitation in 30 daysEPSS · top 1.1% of all CVEs
- YesKnown exploitedin CISA's KEV since 15 Sept 2022
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Linux Kernel Privilege Escalation Vulnerability.
- Added
- 15 Sept 2022
- Fix due (US federal)
- 6 Oct 2022
- Used by ransomware
- Not known
Apply updates per vendor instructions.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 15 Sept 2022.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 3 Exploit-DB entries for it. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: it is being exploited.
Show the exploits4
Exploit-DB3 entries
- 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) (Exploit-DB entry) (opens in a new tab)
EDB-ID 33589local, linux_x86-64published 31 May 2014Verified
- Linux Kernel < 3.8.9 (x86-64) - 'perf_swevent_init' Local Privilege Escalation (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 26131local, linux_x86-64published 11 Jun 2013Verified
- Linux Kernel 2.6.32 < 3.x (CentOS 5/6) - 'PERF_EVENTS' Local Privilege Escalation (1) (Exploit-DB entry) (opens in a new tab)
EDB-ID 25444local, linuxpublished 14 May 2013Not verified
References tagged exploit1 reference
- 33589 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 9 years later
· 9 years later
Added to CISA KEV
Known exploited in the wild
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 47.7% · top 1.1% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.
Affected products
n/a
- affected n/a
References
References30
- openSUSE-SU-2013:0847 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- MDVSA-2013:176 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- [linux-kernel] 20130413 Re: sw_perf_event_destroy() oops while fuzzing (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20130412 sw_perf_event_destroy() oops while fuzzing (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [CentOS-announce] 20130517 CESA-2013:0830 Important CentOS 6 kernel Update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-1826-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [linux-kernel] 20130412 Re: sw_perf_event_destroy() oops while fuzzing (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-1838-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=962792 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/torvalds/linux/commit/8176cced706b5e5d15887584150764894e94e02f (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-1828-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [CentOS-announce] 20130515 CentOS-6 CVE-2013-2094 Kernel Issue (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-1827-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-1836-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 93361 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 33589 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- RHSA-2013:0830 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://news.ycombinator.com/item?id=5703758 (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20130514 Re: CVE Request: linux kernel perf out-of-bounds access (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8176cced706b5e5d15887584150764894e94e02f (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2013:0819 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://packetstormsecurity.com/files/121616/semtex.c (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2013:0925 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://twitter.com/djrbliss/statuses/334301992648331267 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.reddit.com/r/netsec/comments/1eb9iw (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2013:1042 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-1825-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2013:0951 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-2094 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2013-2068 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2013-2094)Record last updated .