Medium severity5.5NVD Advisory· Published Dec 15, 2020· Updated Jun 17, 2026

CVE-2020-29485

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Debian/linux
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Fedoraproject/Fedora2 versions
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Xen/Xen2 versions
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*range: >=4.6.0,<=4.14.0
- (no CPE)range: 4.6 - 4.14.x
Xen/Xendescription

Patches

Vulnerability mechanics

References

xenbits.xenproject.org/xsa/advisory-330.txtnvdPatchThird Party Advisory
www.debian.org/security/2020/dsa-4812nvdThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/nvd

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000