Vulnerability in Linux Kernel
CVE-2017-2583
The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Issue Tracking)
- github.com/torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3 (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2017:1615 (vendor-advisory)
- www.openwall.com/lists/oss-security/2017/01/19/2 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3754-1/ (vendor-advisory)
- www.securityfocus.com/bid/95673 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:1616 (vendor-advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Third Party Advisory, Issue Tracking)
- www.debian.org/security/2017/dsa-3791 (vendor-advisory)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-2583?
- CVE-2017-2583 is a high-severity vulnerability in Linux Kernel. CVSS score: 8.4/10. Published 2017-02-06.
- How severe is CVE-2017-2583?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2017-2583 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.