CVE-2011-2491

Description

The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0 broken link
https://github.com/torvalds/linux/commit/0b760113a3a155269a3fba93a409c640031dd68f third party advisory patch
http://rhn.redhat.com/errata/RHSA-2011-1212.html third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2011/06/23/6 mailing list third party advisory patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0b760113a3a155269a3fba93a409c640031dd68f
https://bugzilla.redhat.com/show_bug.cgi?id=709393 issue tracking third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2011-2491?
CVE-2011-2491 has been scored as a medium severity vulnerability.
How to fix CVE-2011-2491?
To fix CVE-2011-2491, 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-2011-2491 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2011-2491 is being actively exploited. 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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