Vulnerability in Linux Kernel
CVE-2016-4440
arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3 mishandles the APICv on/off state, which allows guest OS users to obtain direct APIC MSR access on the host OS, and consequently cause a denial of service (host OS crash) or possibly execute arbitrary code on the host OS, via x2APIC mode.
EPSS: 0.004 (29.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_CONFIRM, Issue Tracking)
- secalert@redhat.com (x_refsource_CONFIRM, Vendor Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List)
- secalert@redhat.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-4440?
- CVE-2016-4440 is a high-severity vulnerability in Linux Kernel, classified under CWE-264. CVSS score: 7.8/10. Published 2016-06-27.
- How severe is CVE-2016-4440?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-4440 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.