CVE Catalog

CVE-2015-7835

High
Published: Translated: NVD NIST

Summary

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, allowing local PV guest administrators to gain privileges via a crafted superpage mapping.

Risk Assessment

This vulnerability may lead to privilege escalation within the system, posing a serious threat to the security of the virtual environment.

Recommendation

It is recommended to upgrade to the latest version of Xen where the issue has been fixed to minimize the risk of privilege escalation.

Related vulnerabilities

Original NVD description (English source)

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS