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CVE
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CVE-2014-8481Date: (C)2014-11-11   (M)2023-12-22


The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V2 Severity:
CVSS Score : 4.9
Exploit Score: 3.9
Impact Score: 6.9
 
CVSS V2 Metrics:
Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality: NONE
Integrity: NONE
Availability: COMPLETE
  
Reference:
SECUNIA-62042
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
http://www.openwall.com/lists/oss-security/2014/10/23/7
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a430c9166312e1aa3d80bce32374233bdbfeba32
https://bugzilla.redhat.com/show_bug.cgi?id=1156615
https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32

CWE    1
CWE-399

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