Buffer overflow in Linux Kernel
CVE-2017-12188
arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun."
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 (36.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.0% 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
- Linux Kernel
- Linux Kernel — versions Linux kernel
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2018:0412 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:0395 (vendor-advisory, Third Party Advisory)
- patchwork.kernel.org/patch/9996587/ (Patch, Issue Tracking, Vendor Advisory)
- patchwork.kernel.org/patch/9996579/ (Patch, Issue Tracking, Vendor Advisory)
- www.securityfocus.com/bid/101267 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-12188?
- CVE-2017-12188 is a high-severity vulnerability in Linux Kernel, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2017-10-11.
- How severe is CVE-2017-12188?
- High severity. CVSS v3 base score is 7.8 out of 10.