CVE-2012-4538 — Improper Input Validation in XEN

CWE-20 — Improper Input Validation7 documents6 sources
Severity
4.9MEDIUMNVD
EPSS
0.1%
top 83.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENDebian XEN
Timeline
PublishedNov 24
Latest updateMay 17

Description

The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly check the pagetable state when running on shadow pagetables, which allows a local HVM guest OS to cause a denial of service (hypervisor crash) via unspecified vectors.

CVSS vector

AV:L/AC:L/C:N/I:N/A:CExploitability: 3.9 | Impact: 6.9

Affected Packages3 packages

▶debiandebian/xen< xen 4.1.3-4 (bookworm)
▶Debianxen/xen< 4.1.3-4+3
▶NVDxen/xen4.0.0, 4.1.0, 4.2.0+2

🔴Vulnerability Details

2
GHSA
GHSA-j5g3-6543-2hjc: The HVMOP_pagetable_dying hypercall in Xen 4↗2022-05-17
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OSV
CVE-2012-4538: The HVMOP_pagetable_dying hypercall in Xen 4↗2012-11-24
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📋Vendor Advisories

2
Red Hat
kernel: xen: Unhooking empty PAE entries can crash Xen↗2012-11-13
▶
Debian
CVE-2012-4538: xen - The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly c...↗2012
▶

💬Community

2
Bugzilla
CVE-2012-4538 kernel: xen: Unhooking empty PAE entries can crash Xen [fedora-all]↗2012-11-13
▶
Bugzilla
CVE-2012-4538 kernel: xen: Unhooking empty PAE entries can crash Xen↗2012-10-25
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