CVE-2011-4110

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-01-27 · updated 2026-06-16
Weakness: CWE-264

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."

Affected products

Linux kernel: 2.6

References

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

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