CVE-2016-9914

NameCVE-2016-9914
DescriptionMemory leak in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local privileged guest OS users to cause a denial of service (host memory consumption and possibly QEMU process crash) by leveraging a missing cleanup operation in FileOperations.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: local)
Debian Bugs847496

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)wheezy1.1.2+dfsg-6a+deb7u12vulnerable
wheezy (security)1.1.2+dfsg-6+deb7u24vulnerable
jessie (security), jessie1:2.1+dfsg-12+deb8u6vulnerable
stretch1:2.8+dfsg-6+deb9u2fixed
stretch (security)1:2.8+dfsg-6+deb9u3fixed
buster, sid1:2.10.0+dfsg-2fixed
qemu-kvm (PTS)wheezy1.1.2+dfsg-6+deb7u12vulnerable
wheezy (security)1.1.2+dfsg-6+deb7u24vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusource(unstable)1:2.8+dfsg-1medium847496
qemu-kvmsource(unstable)(unfixed)medium

Notes

[jessie] - qemu <no-dsa> (Minor issue)
[wheezy] - qemu <no-dsa> (proxy and handle drivers not included during compilation)
[wheezy] - qemu-kvm <no-dsa> (proxy and handle drivers not included during compilation)
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg03278.html
Fixed by: http://git.qemu.org/?p=qemu.git;a=commit;h=702dbcc274e2ca43be20ba64c758c0ca57dab91d (v2.8.0-rc2)
http://www.openwall.com/lists/oss-security/2016/12/06/11
proxy and handle drivers not included during compilation in wheezy, so the cleanup function is never implemented:
see debian-lts ML: https://lists.debian.org/debian-lts/2016/12/msg00136.html

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