CVE-2014-3631

HIGH

Description

The assoc_array_gc function in the associative-array implementation in lib/assoc_array.c in the Linux kernel before 3.16.3 does not properly implement garbage collection, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via multiple "keyctl newring" operations followed by a "keyctl timeout" operation.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=95389b08d93d5c06ec63ab49bd732b0069b7c35e

http://osvdb.org/show/osvdb/111298

http://www.exploit-db.com/exploits/36268

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3

http://www.securityfocus.com/bid/70095

http://www.ubuntu.com/usn/USN-2378-1

http://www.ubuntu.com/usn/USN-2379-1

https://bugzilla.redhat.com/show_bug.cgi?id=1140325

https://github.com/torvalds/linux/commit/95389b08d93d5c06ec63ab49bd732b0069b7c35e

Details

Source: MITRE

Published: 2014-09-28

Updated: 2015-03-18

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH