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CVE-2014-8594

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Date: November 19, 2014

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).

Language: C

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2014-8594
http://www.securityfocus.com/bid/71149
https://exchange.xforce.ibmcloud.com/vulnerabilities/98767
http://secunia.com/advisories/62672
https://security.gentoo.org/glsa/201504-04
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
http://xenbits.xen.org/xsa/advisory-109.html
http://www.debian.org/security/2015/dsa-3140
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
https://www.mend.io/vulnerability-database/CVE-2014-8594

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Top Fix

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CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE

CVSS v2

Base Score:
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH
Additional information:

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