Infinite loop in Linux kernel - CVE-2011-4621
Published: May 17, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44076
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2011-4621
CWE-ID: CWE-835
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes code in a loop.
How to mitigate CVE-2011-4621
Install update from vendor's website.
Sources
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f26f9aff6aaf67e9a430d16c266f91b13a5bff64
- http://www.openwall.com/lists/oss-security/2011/12/21/6
- https://bugzilla.redhat.com/show_bug.cgi?id=769711
- https://github.com/torvalds/linux/commit/f26f9aff6aaf67e9a430d16c266f91b13a5bff64