CVE-2011-4110

Public Exploit

Description

The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and "updating a negative key into a fully instantiated key."

Category

2.1
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory marc.info
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://lkml.org/lkml/2011/11/15/363 exploit mailing list
http://www.securityfocus.com/bid/50755 vdb entry
http://www.ubuntu.com/usn/USN-1328-1 vendor advisory
http://www.ubuntu.com/usn/USN-1344-1 vendor advisory
http://www.openwall.com/lists/oss-security/2011/11/22/5 mailing list
http://www.openwall.com/lists/oss-security/2011/11/21/19 mailing list
http://www.ubuntu.com/usn/USN-1324-1 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=751297 patch
http://secunia.com/advisories/47754 third party advisory
http://www.openwall.com/lists/oss-security/2011/11/22/6 mailing list
http://marc.info/?l=bugtraq&m=139447903326211&w=2 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2011-4110?
CVE-2011-4110 has been scored as a low severity vulnerability.
How to fix CVE-2011-4110?
To fix CVE-2011-4110, 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-2011-4110 being actively exploited in the wild?
It is possible that CVE-2011-4110 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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