CVE-2011-4621

Public Exploit

Description

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Third-Party Advisory openwall.com Third-Party Advisory redhat.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/f26f9aff6aaf67e9a430d16c266f91b13a5bff64 third party advisory patch
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37 broken link
http://www.openwall.com/lists/oss-security/2011/12/21/6 mailing list patch exploit third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=769711 issue tracking third party advisory patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f26f9aff6aaf67e9a430d16c266f91b13a5bff64

Frequently Asked Questions

What is the severity of CVE-2011-4621?
CVE-2011-4621 has been scored as a medium severity vulnerability.
How to fix CVE-2011-4621?
To fix CVE-2011-4621, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4621 being actively exploited in the wild?
It is possible that CVE-2011-4621 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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