A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious, local users to disclose potentially sensitive information.
The vulnerability is caused due to an error within the "mm_for_maps()" function in fs/proc/base.c. This can be exploited to disclose the content of the "maps" and "smaps" files from the "/proc" filesystem for a setuid process which is starting.
Solution: Update to version 22.214.171.124.
Provided and/or discovered by: Red Hat credits Kees Cook and Steve Beattie.
Original Advisory: https://bugzilla.redhat.com/show_bug.cgi?id=516171
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Subject: Linux Kernel "mm_for_maps()" Information Disclosure
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