CVE-2016-9777

NameCVE-2016-9777
DescriptionKVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.
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 severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.258-1fixed
buster4.19.181-1fixed
buster (security)4.19.171-2fixed
bullseye, sid5.10.28-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcewheezy(not affected)
linuxsourcejessie(not affected)
linuxsource(unstable)4.8.15-1

Notes

[jessie] - linux <not-affected> (Vulnerable code introduced later)
[wheezy] - linux <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=1400804
Fixed by: https://git.kernel.org/linus/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755 (v4.9-rc7)
Introduced in: https://git.kernel.org/linus/af1bae5497b98cb99d6b0492e6981f060420a00c (v4.8-rc1)
https://www.openwall.com/lists/oss-security/2016/12/02/2

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