VULNERABILITY INTELLIGENCE

CVE-2020-29568

CVSS score6.5 MEDIUM
EPSS probability0.36%
CISA KEVNot currently listed
Published2020-12-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Description

An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.

Weakness classification

  • nvd@nist.gov: CWE-770

Primary references