Heap-based buffer overflow in the find_fixedlength function in pcre_compile.c in PCRE before 8.38 allows remote attackers to cause a denial of service (crash) or obtain sensitive information from heap memory and possibly bypass the ASLR protection mechanism via a crafted regular expression with an excess closing parenthesis.
http://rhn.redhat.com/errata/RHSA-2016-1025.html
http://rhn.redhat.com/errata/RHSA-2016-2750.html
https://access.redhat.com/errata/RHSA-2016:1132
https://security.gentoo.org/glsa/201607-02
http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
http://www.openwall.com/lists/oss-security/2015/06/26/1
http://www.openwall.com/lists/oss-security/2015/06/26/3
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html