Improper Input Validation Affecting torvalds/linux package, versions [,2.6.31.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005052
  • published26 Jan 2022
  • disclosed29 Oct 2009
  • creditUnknown

Introduced: 29 Oct 2009

CVE-2009-3640  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 2.6.31.1 or higher.

Overview

Affected versions of this package are vulnerable to Improper Input Validation. The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc1 does not properly handle the absence of an Advanced Programmable Interrupt Controller (APIC), which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly gain privileges via a call to the kvm_vcpu_ioctl function.

References

CVSS Base Scores

version 3.1