The SProcXFixesSelectSelectionInput function in the XFixes extension in X.Org X Window System (aka X11 or X) X11R6.8.0 and X.Org Server (aka xserver and xorg-server) before 1.16.3 allows remote authenticated users to cause a denial of service (out-of-bounds read or write) or possibly execute arbitrary code via a crafted length value.
http://advisories.mageia.org/MGASA-2014-0532.html
http://secunia.com/advisories/61947
http://secunia.com/advisories/62292
https://security.gentoo.org/glsa/201504-06
http://www.debian.org/security/2014/dsa-3095
http://www.mandriva.com/security/advisories?name=MDVSA-2015:119
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
Published: 2014-12-10
Base Score: 6.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P
Severity: Medium