Buffer overflow in the “read-u8vector!” procedure in the srfi-4 unit in CHICKEN stable 4.8.0.7 and development snapshots before 4.9.1 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via a “#f” value in the NUM argument.
code.call-cc.org/cgi-bin/gitweb.cgi?p=chicken-core.git%3Ba=commit%3Bh=1d06ce7e21c7e903ca5dca11fda6fcf2cc52de5e
lists.gnu.org/archive/html/chicken-announce/2014-05/msg00001.html
lists.gnu.org/archive/html/chicken-hackers/2014-05/msg00032.html
seclists.org/oss-sec/2014/q2/328
seclists.org/oss-sec/2014/q2/334
www.securityfocus.com/bid/67468
bugs.call-cc.org/ticket/1124
security.gentoo.org/glsa/201612-54