Integer signedness error in the pkt_find_dev_from_minor function in drivers/block/pktcdvd.c in the Linux kernel before 2.6.36-rc6 allows local users to obtain sensitive information from kernel memory or cause a denial of service (invalid pointer dereference and system crash) via a crafted index value in a PKT_CTRL_CMD_STATUS ioctl call.
http://www.vupen.com/english/advisories/2011/0298
http://www.vupen.com/english/advisories/2011/0124
http://www.vupen.com/english/advisories/2011/0012
http://www.ubuntu.com/usn/USN-1000-1
http://www.securityfocus.com/bid/43551
http://www.redhat.com/support/errata/RHSA-2010-0842.html
http://www.openwall.com/lists/oss-security/2010/09/28/6
http://www.openwall.com/lists/oss-security/2010/09/28/2
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
http://www.debian.org/security/2010/dsa-2126
http://secunia.com/advisories/42932
http://secunia.com/advisories/42801
http://secunia.com/advisories/42778
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html