Vulnerability Details CVE-2016-9777
KVM 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 21.1%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 6.9
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
- http://www.openwall.com/lists/oss-security/2016/12/02/2
- http://www.securityfocus.com/bid/94640
- https://bugzilla.redhat.com/show_bug.cgi?id=1400804
- https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
- http://www.openwall.com/lists/oss-security/2016/12/02/2
- http://www.securityfocus.com/bid/94640
- https://bugzilla.redhat.com/show_bug.cgi?id=1400804
- https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
Products affected by CVE-2016-9777
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cpe:2.3:o:linux:linux_kernel:4.8
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cpe:2.3:o:linux:linux_kernel:4.8.1
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cpe:2.3:o:linux:linux_kernel:4.8.10
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cpe:2.3:o:linux:linux_kernel:4.8.11
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cpe:2.3:o:linux:linux_kernel:4.8.2
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cpe:2.3:o:linux:linux_kernel:4.8.3
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cpe:2.3:o:linux:linux_kernel:4.8.4
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cpe:2.3:o:linux:linux_kernel:4.8.5
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cpe:2.3:o:linux:linux_kernel:4.8.6
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cpe:2.3:o:linux:linux_kernel:4.8.7
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cpe:2.3:o:linux:linux_kernel:4.8.8
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cpe:2.3:o:linux:linux_kernel:4.8.9