Vulnerability Details : CVE-2017-2596
The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2017-2596
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 25 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-2596
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
6.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
2.0
|
4.0
|
NIST |
CWE ids for CVE-2017-2596
-
The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-2596
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http://www.debian.org/security/2017/dsa-3791
Debian -- Security Information -- DSA-3791-1 linux
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http://www.securityfocus.com/bid/95878
Linux Kernel CVE-2017-2596 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://bugzilla.redhat.com/show_bug.cgi?id=1417812
1417812 – (CVE-2017-2596) CVE-2017-2596 Kernel: kvm: page reference leakage in handle_vmonIssue Tracking;Patch
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https://access.redhat.com/errata/RHSA-2017:1842
RHSA-2017:1842 - Security Advisory - Red Hat Customer Portal
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https://access.redhat.com/errata/RHSA-2017:2077
RHSA-2017:2077 - Security Advisory - Red Hat Customer Portal
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http://www.openwall.com/lists/oss-security/2017/01/31/4
oss-security - CVE-2017-2596 Kernel: kvm: page reference leakage in handle_vmonMailing List;Patch;Third Party Advisory
Products affected by CVE-2017-2596
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*