CVE-2015-5166

NameCVE-2015-5166
DescriptionUse-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh
Debian Bugs794611

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)stretch1:2.8+dfsg-6+deb9u9fixed
stretch (security)1:2.8+dfsg-6+deb9u12fixed
buster, buster (security)1:3.1+dfsg-8+deb10u8fixed
bullseye, sid1:5.2+dfsg-3fixed
xen (PTS)stretch (security), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster4.11.4+37-g3263f257ca-1fixed
buster (security)4.11.4+57-g41a822c392-2fixed
bullseye, sid4.14.0+88-g1d1d1f5391-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcesqueeze(not affected)
qemusourcewheezy(not affected)
qemusourcejessie(not affected)
qemusource(unstable)1:2.4+dfsg-1a794611
qemu-kvmsource(unstable)(not affected)
xensourcesqueeze(not affected)
xensourcewheezy(not affected)
xensource(unstable)4.4.0-1

Notes

[jessie] - qemu <not-affected> (Vulnerable code not present)
[wheezy] - qemu <not-affected> (Vulnerable code not present)
[squeeze] - qemu <not-affected> (Vulnerable code not present)
- qemu-kvm <not-affected> (Vulnerable code not present)
[wheezy] - xen <not-affected> (Vulnerable code not present)
[squeeze] - xen <not-affected> (Vulnerable code not present)
Xen switched to qemu-system in 4.4.0-1
pci_piix3_xen_ide_unplug introduced in http://git.qemu.org/?p=qemu.git;a=commitdiff;h=679f4f8b178e7c66fbc2f39c905374ee8663d5d8 (v1.0-rc0)
BlockDriverState converted to BlockBackend in http://git.qemu.org/?p=qemu.git;a=commitdiff;h=4be746345f13e99e468c60acbd3a355e8183e3ce (v2.2.0-rc0)
Fixed by: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=6cd387833d05e8ad31829d97e474dc420625aed9 (v2.4.0-rc4)
http://xenbits.xen.org/xsa/advisory-139.html

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