Vulnerability in Linux Kernel
CVE-2016-3713
The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvm_arch_vcpu data structure, and consequently obtain sensitive information or cause a denial of service (system crash), via a crafted ioctl call.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1
- github.com/torvalds/linux/commit/9842df62004f366b9fed2423e24df10542ee0dc5 (Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/05/16/2 (mailing-list)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi
Frequently asked questions
- What is CVE-2016-3713?
- CVE-2016-3713 is a high-severity vulnerability in Linux Kernel, classified under Improper Access Control. CVSS score: 7.1/10. Published 2016-06-27.
- How severe is CVE-2016-3713?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2016-3713 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.