A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service).
The vulnerability is caused due to an error within the "apparmor_setprocattr()" function (security/apparmor/lsm.c), which can be exploited to trigger a "BUG_ON()" if a process writes malformed data to its "/attr/current" proc file.
Solution: Fixed in version 220.127.116.11 and 18.104.22.168.
Provided and/or discovered by: Reported in an Ubuntu bug by Emanuel Bronshtein.
Original Advisory: https://bugs.launchpad.net/apparmor/+bug/789409
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Subject: Linux Kernel "apparmor_setprocattr()" Denial of Service Vulnerability
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