Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via regex patterns containing unmatched "\Q\E" sequences with orphan "\E" codes.
https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9725
https://issues.rpath.com/browse/RPL-1738
https://exchange.xforce.ibmcloud.com/vulnerabilities/38272
http://www.vupen.com/english/advisories/2008/0924/references
http://www.vupen.com/english/advisories/2007/4238
http://www.vupen.com/english/advisories/2007/3790
http://www.vupen.com/english/advisories/2007/3725
http://www.us-cert.gov/cas/techalerts/TA07-352A.html
http://www.securityfocus.com/bid/26346
http://www.securityfocus.com/archive/1/483579/100/0/threaded
http://www.securityfocus.com/archive/1/483357/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2007-1068.html
http://www.redhat.com/support/errata/RHSA-2007-0967.html
http://www.pcre.org/changelog.txt
http://www.novell.com/linux/security/advisories/2007_62_pcre.html
http://www.novell.com/linux/security/advisories/2007_25_sr.html
http://www.mandriva.com/security/advisories?name=MDVSA-2008:030
http://www.mandriva.com/security/advisories?name=MDKSA-2007:212
http://www.mandriva.com/security/advisories?name=MDKSA-2007:211
http://www.debian.org/security/2008/dsa-1570
http://www.debian.org/security/2007/dsa-1399
http://support.avaya.com/elmodocs2/security/ASA-2007-505.htm
http://securitytracker.com/id?1018895
http://security.gentoo.org/glsa/glsa-200805-11.xml
http://security.gentoo.org/glsa/glsa-200801-19.xml
http://security.gentoo.org/glsa/glsa-200801-18.xml
http://security.gentoo.org/glsa/glsa-200801-02.xml
http://security.gentoo.org/glsa/glsa-200711-30.xml
http://secunia.com/advisories/30219
http://secunia.com/advisories/30155
http://secunia.com/advisories/30106
http://secunia.com/advisories/29420
http://secunia.com/advisories/29267
http://secunia.com/advisories/28720
http://secunia.com/advisories/28714
http://secunia.com/advisories/28658
http://secunia.com/advisories/28414
http://secunia.com/advisories/28406
http://secunia.com/advisories/28136
http://secunia.com/advisories/28041
http://secunia.com/advisories/27965
http://secunia.com/advisories/27773
http://secunia.com/advisories/27741
http://secunia.com/advisories/27697
http://secunia.com/advisories/27598
http://secunia.com/advisories/27554
http://secunia.com/advisories/27547
http://secunia.com/advisories/27543
http://secunia.com/advisories/27538
http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html
http://docs.info.apple.com/article.html?artnum=307562