The Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via an empty packet line.
https://libgit2.github.com/security/
https://github.com/libgit2/libgit2/commit/84d30d569ada986f3eef527cbdb932643c2dd037
https://github.com/libgit2/libgit2/commit/2fdef641fd0dd2828bd948234ae86de75221a11a
http://www.securityfocus.com/bid/95339
http://www.openwall.com/lists/oss-security/2017/01/11/6
http://www.openwall.com/lists/oss-security/2017/01/10/5
http://lists.opensuse.org/opensuse-updates/2017-02/msg00072.html
http://lists.opensuse.org/opensuse-updates/2017-02/msg00036.html
http://lists.opensuse.org/opensuse-updates/2017-02/msg00030.html