VULNERABILITY INTELLIGENCE

CVE-2020-29485

CVSS score5.5 MEDIUM
EPSS probability0.40%
CISA KEVNot currently listed
Published2020-12-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XS_RESET_WATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are vulnerable. Systems using the C Xenstored implementation are not vulnerable.

Weakness classification

  • CWE-401: Missing Release of Memory after Effective Lifetime

Primary references