CVE-2018-7858

NameCVE-2018-7858
DescriptionQuick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.
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 severitylow (attack range: local)
Debian Bugs892497

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)jessie (security), jessie1:2.1+dfsg-12+deb8u6fixed
stretch (security), stretch1:2.8+dfsg-6+deb9u4fixed
buster, sid1:2.12+dfsg-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusource(unstable)1:2.12~rc3+dfsg-1low892497
qemusourcejessie(not affected)
qemusourcestretch(not affected)
qemusourcewheezy(not affected)
qemu-kvmsource(unstable)(unfixed)low
qemu-kvmsourcewheezy(not affected)

Notes

[stretch] - qemu <not-affected> (Vulnerable code not present)
[jessie] - qemu <not-affected> (Vulnerable code not present)
[wheezy] - qemu <not-affected> (Vulnerable code not present)
[wheezy] - qemu-kvm <not-affected> (Vulnerable code not present)
https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html

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