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Description of problem:

cg_get_procname_from_proc_cmdline in api.c makes the unwarranted assumption that a given /proc/<PID>/cmdline will fit in FILENAME_MAX characters (including terminating NUL)

This assumption has been seen to cause failures when command lines are are dynamically created in grid environments.


Version-Release number of selected component (if applicable):

libcgroup-0.41-8.el7


Additional info:

As was stated by Martin, this is causing grid computing jobs to fail for this TAM customer.  But the customer also has concern about fact there is a buffer overflow in a service running as root.  Thus customer is very anxious to get a fix here.  They are generally very good about about testing pre-GA RPMs if we need too.

Thank you.

Created attachment 1169532 [details]
api.c: fix potential buffer overflow

Provided to customer for testing, will let you know their feedback.

Thank you!

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2364.html