Vulnerability Monitor

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CVE-2009-4031

The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.

Published

2009-11-29T13:07:32.250

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Primary
    CWE-20
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
Operating System linux linux_kernel 2.6.32 Yes
References