CVE-2009-4031

Advisory lineage Upstream: 0 Downstream: 3
Modified
Published: 27 Nov 2009, 19:00
Last modified:07 Aug 2024, 06:45

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
7.8 HIGH
v2.0 (nvd)
EPSS Score
2.11% LOW
2% probability -0.13%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Nov 2009, 19:00
Published
Vulnerability first disclosed
07 Aug 2024, 06:45
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v2.0•HIGH•Score: 7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 2.11%• Percentile: 84%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • linux•linux_kernel

    < 2.6.32 | 2.6.32 | 2.6.32:rc1 | 2.6.32:rc2 | 2.6.32:rc3 | 2.6.32:rc4 | 2.6.32:rc5 | 2.6.32:rc6 | 2.6.32:rc7

References (10)