CVE-2011-1089

The addmntent function in the GNU C Library (aka glibc or libc6) 2.13 and
earlier does not report an error status for failed attempts to write to the
/etc/mtab file, which makes it easier for local users to trigger corruption
of this file, as demonstrated by writes from a process with a small
RLIMIT_FSIZE value, a different vulnerability than CVE-2010-0296.

Bugs

• <http://sourceware.org/bugzilla/show_bug.cgi?id=12625&gt;
• <https://bugzilla.redhat.com/show_bug.cgi?id=688980&gt;