NULL pointer dereference in Linux Kernel
CVE-2016-8630
The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undefined instruction.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% 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-4.8.7 (Release Notes)
- www.securityfocus.com/bid/94459 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- rhn.redhat.com/errata/RHSA-2017-0387.html (vendor-advisory)
- github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e (Patch, Third Party Advisory, Issue Tracking)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Issue Tracking, Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/11/22/3 (mailing-list, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2017-0386.html (vendor-advisory)
Frequently asked questions
- What is CVE-2016-8630?
- CVE-2016-8630 is a medium-severity vulnerability in Linux Kernel, classified under Improper Access Control. CVSS score: 5.5/10. Published 2016-11-28.
- How severe is CVE-2016-8630?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2016-8630 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.