01 Record

CVE-2020-29570

An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.37% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 30.3% of scored records. A rank, not a probability.
NVD base score: 6.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2020-12-15 17:01Z5 YR AGO

Last updated

2024-08-04 16:55Z2 YR AGO

Reserved

2020-12-04

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.1

Document digest

e679e994c06b235f547ec57e0b69737a6ee164c43cb7f688ca06885ef5f42d65

05 Affected products

VendorProductVersionsPlatforms

debiandebian_linuxNot specified—

fedoraprojectfedoraNot specified—

xenxenNot specified—

06 References

xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-358.htmlx_refsource_MISC
www.debian.orgDSA-4812https://www.debian.org/security/2020/dsa-4812vendor-advisoryx_refsource_DEBIAN
www.openwall.com[oss-security] 20201216 Xen Security Advisory 358 v5 (CVE-2020-29570) - FIFO event channels control block related orderinghttp://www.openwall.com/lists/oss-security/2020/12/16/4mailing-listx_refsource_MLIST
lists.fedoraproject.orgFEDORA-2020-64859a826bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/vendor-advisoryx_refsource_FEDORA
lists.fedoraproject.orgFEDORA-2020-df772b417bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/vendor-advisoryx_refsource_FEDORA
security.gentoo.orgGLSA-202107-30https://security.gentoo.org/glsa/202107-30vendor-advisoryx_refsource_GENTOO

01 Record index

CVE-2020-29570

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2020-29570

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References