vulnwire
6.5med

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, whic…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
6.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 35%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.40% probability of exploitation in the next 30 days, higher than 35% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.06.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD2.04.9AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-772 Missing Release of Resource after Effective Lifetime
Technology feeds
Linux kernel (RSS, critical only)

References

  • bugzilla.redhat.com /show_bug.cgi?id=1417812 · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2017/01/31/4 · mailing-list, x_refsource_MLIST, x_transferred
  • securityfocus.com /bid/95878 · vdb-entry, x_refsource_BID, x_transferred
  • access.redhat.com /errata/RHSA-2017:2077 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:1842 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • debian.org /security/2017/dsa-3791 · vendor-advisory, x_refsource_DEBIAN, x_transferred

Sources

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