kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x before 2.0.27, and 2.1.x before 2.1.2 does not properly handle bitwise left-shifts, which allows remote attackers to cause a denial of service (invalid read operation) via a crafted keyring file, related to sign extensions and “memcpy with overlapping ranges.”
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1607
Reference (s):
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=2183683bd633818dd031b090b5530951de76f392
- http://www.openwall.com/lists/oss-security/2015/02/13/14
- http://www.openwall.com/lists/oss-security/2015/02/14/6
- http://www.securityfocus.com/bid/72610
- http://www.ubuntu.com/usn/usn-2554-1/