Resource exhaustion in Linux kernel - CVE-2011-2918
Published: May 25, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44029
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-2918
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
The Performance Events subsystem in the Linux kernel before 3.1 does not properly handle event overflows associated with PERF_COUNT_SW_CPU_CLOCK events, which allows local users to cause a denial of service (system hang) via a crafted application.
Affected software
Linux kernel
Amazon Linux AMI
Amazon Linux AMI
How to mitigate CVE-2011-2918
Install update from vendor's website.
Linux kernel - update to 3.1
Links to Public Exploits and PoC-codes
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a8b0ca17b80e92faab46ee7179ba9e99ccb61233
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
- http://www.openwall.com/lists/oss-security/2011/08/16/1
- https://bugzilla.redhat.com/show_bug.cgi?id=730706
- https://github.com/torvalds/linux/commit/a8b0ca17b80e92faab46ee7179ba9e99ccb61233