Memory Leak Vulnerability in Xen Project Affecting PVH Guests
CVE-2024-45819

5.5MEDIUM

Key Information:

Vendor

Xen Project
Status
Xen Project
Vendor
CVE Published:
19 December 2024

What is CVE-2024-45819?

CVE-2024-45819 is a high-severity vulnerability affecting the Xen Hypervisor, specifically in the way ACPI tables are constructed for PVH guests. When the toolstack creates these tables, it initializes the local memory correctly for used parts but fails to clear the excess allocated space before copying to guest memory. This oversight may lead to sensitive data exposure from previous operations stored in the uninitialized local memory. Users of the affected versions of the Xen Hypervisor should urgently evaluate their systems and apply necessary patches to mitigate risks associated with this vulnerability.

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Deploy the Patch

Affected Version(s)

Xen consult Xen advisory XSA-464

References

https://xenbits.xenproject.org/xsa/advisory-464.html

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

Credit

This issue was discovered by Jason Andryuk of AMD.
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