CVE-2016-6834

NameCVE-2016-6834
DescriptionThe net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1599-1
Debian Bugs834905

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)bullseye1:5.2+dfsg-11+deb11u3fixed
bullseye (security)1:5.2+dfsg-11+deb11u2fixed
bookworm1:7.2+dfsg-7+deb12u7fixed
sid, trixie1:9.1.1+ds-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcewheezy(not affected)
qemusourcejessie1:2.1+dfsg-12+deb8u8DLA-1599-1
qemusource(unstable)1:2.6+dfsg-3.1834905
qemu-kvmsourcewheezy(not affected)
qemu-kvmsource(unstable)(unfixed)

Notes

[wheezy] - qemu <not-affected> (Vulnerable code not present, packet abstraction introduced in 1.5)
[wheezy] - qemu-kvm <not-affected> (Vulnerable code not present, packet abstraction introduced in 1.5)
http://git.qemu.org/?p=qemu.git;a=commit;h=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05
Upstream patch: https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01601.html
https://www.openwall.com/lists/oss-security/2016/08/11/8

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