CVE-2015-6855 Information

Description

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive which triggers a divide-by-zero error and instance crash.

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html http://www.debian.org/security/2015/dsa-3361 http://www.debian.org/security/2015/dsa-3362 http://www.openwall.com/lists/oss-security/2015/09/10/1 http://www.openwall.com/lists/oss-security/2015/09/10/2 http://www.securityfocus.com/bid/76691 http://www.ubuntu.com/usn/USN-2745-1 https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html https://security.gentoo.org/glsa/201602-01