The posix_spawn_file_actions_addopen function in glibc before 2.20 does not copy its path argument in accordance with the POSIX specification, which allows context-dependent attackers to trigger use-after-free vulnerabilities.
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=89e435f3559c53084498e9baad22172b64429362
https://sourceware.org/bugzilla/show_bug.cgi?id=17048
https://security.gentoo.org/glsa/201503-04
https://seclists.org/bugtraq/2019/Sep/7
https://seclists.org/bugtraq/2019/Jun/14
https://exchange.xforce.ibmcloud.com/vulnerabilities/93784
http://www.securityfocus.com/bid/68006
http://www.mandriva.com/security/advisories?name=MDVSA-2014:152
http://seclists.org/fulldisclosure/2019/Sep/7
http://seclists.org/fulldisclosure/2019/Jun/18
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00012.html