CVE-2009-4031
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
6.1 Medium
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
61.4%
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.
Affected configurations
References
git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88
lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html
secunia.com/advisories/37720
www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz
www.openwall.com/lists/oss-security/2009/11/25/1
www.openwall.com/lists/oss-security/2009/11/25/3
www.securityfocus.com/bid/37130
bugzilla.redhat.com/show_bug.cgi?id=541160
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089
www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html
Related
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
6.1 Medium
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
61.4%