Out-of-bounds Read in Linux Kernel
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (29.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12 (Release Notes)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- www.securityfocus.com/bid/94640 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755 (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/12/02/2 (mailing-list, Patch, Mailing List)
Frequently asked questions
- What is CVE-2016-9777?
- CVE-2016-9777 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2016-12-28.
- How severe is CVE-2016-9777?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-9777 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.