The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x...
Vulnerability Description
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).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://security.gentoo.org/glsa/201504-04
- http://secunia.com/advisories/62672
- http://xenbits.xen.org/xsa/advisory-109.html
- http://www.securityfocus.com/bid/71149
- http://www.debian.org/security/2015/dsa-3140
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98767
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Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.