Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.9.8 |
Related Weaknesses (CWE)
References
- http://www.debian.org/security/2017/dsa-3791
- http://www.openwall.com/lists/oss-security/2017/01/31/4Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/95878Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://bugzilla.redhat.com/show_bug.cgi?id=1417812Issue TrackingPatch
- http://www.debian.org/security/2017/dsa-3791
- http://www.openwall.com/lists/oss-security/2017/01/31/4Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/95878Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://bugzilla.redhat.com/show_bug.cgi?id=1417812Issue TrackingPatch
FAQ
What is CVE-2017-2596?
CVE-2017-2596 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 (...
How severe is CVE-2017-2596?
CVE-2017-2596 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-2596?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.