CVE-2015-6855

Name	CVE-2015-6855
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-3361-1, DSA-3362-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qemu (PTS)	jessie, jessie (lts)	1:2.1+dfsg-12+deb8u23	fixed
	stretch (security)	1:2.8+dfsg-6+deb9u17	fixed
	stretch (lts), stretch	1:2.8+dfsg-6+deb9u19	fixed
	buster (security), buster, buster (lts)	1:3.1+dfsg-8+deb10u12	fixed
	bullseye	1:5.2+dfsg-11+deb11u3	fixed
	bullseye (security)	1:5.2+dfsg-11+deb11u2	fixed
	bookworm	1:7.2+dfsg-7+deb12u7	fixed
	sid, trixie	1:9.1.1+ds-5	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin
qemu	source	squeeze	(unfixed)	end-of-life
qemu	source	wheezy	1.1.2+dfsg-6a+deb7u11		DSA-3361-1
qemu	source	jessie	1:2.1+dfsg-12+deb8u4		DSA-3361-1
qemu	source	(unstable)	1:2.4+dfsg-2
qemu-kvm	source	squeeze	(unfixed)	end-of-life
qemu-kvm	source	wheezy	1.1.2+dfsg-6+deb7u11		DSA-3362-1
qemu-kvm	source	(unstable)	(unfixed)

Notes

[squeeze] - qemu <end-of-life> (Not supported in Squeeze LTS)
[squeeze] - qemu-kvm <end-of-life> (Not supported in Squeeze LTS)
https://www.openwall.com/lists/oss-security/2015/09/10/1
Fix commit: http://git.qemu.org/?p=qemu.git;a=commit;h=d9033e1d3aa666c5071580617a57bd853c5d794a
exec_cmd introduced in http://git.qemu.org/?p=qemu.git;a=commit;h=7cff87ff6ab117799e32e42c2e4dc4c0588e583a
cmd_table introduced in http://git.qemu.org/?p=qemu.git;a=commit;h=844505b12e722d9ba7060480e766351fc6313501