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CVE-2020-29568

nvd nist
Published: Dec 15, 2020Modified: Jun 17, 2026

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6.5
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Exploitability: 2.0 / Impact: 4.0
Source: NVD

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.

Affected (3)

Products: Xen: Xen · Debian: Debian Linux
Xen
1 product
Xen
Debian
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Xen
Up to 4.14.1
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 10.0
Debian Linux
Version 9.0

Related CWEs

CWE-770
Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (10)

Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory

Timeline

No history available yet.