The bsd_glob function in the File::Glob module for Perl before 5.14.2 allows context-dependent attackers to cause a denial of service (crash) via a glob expression with the GLOB_ALTDIRFUNC flag, which triggers an uninitialized pointer dereference.
https://bugzilla.redhat.com/show_bug.cgi?id=742987
https://blogs.oracle.com/sunsecurity/entry/cve_2011_2728_denial_of1
http://www.securityfocus.com/bid/49858
http://secunia.com/advisories/46172
http://perl5.git.perl.org/perl.git/commit/1af4051e077438976a4c12a0622feaf6715bec77
http://lists.fedoraproject.org/pipermail/package-announce/2011-November/069752.html
http://cpansearch.perl.org/src/FLORA/perl-5.14.2/pod/perldelta.pod