6.2

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 the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Xen ≫ Xen Version >= 4.4.0 <= 4.14.0
Debian ≫ Debian Linux Version 10.0
Fedoraproject ≫ Fedora Version 32
Fedoraproject ≫ Fedora Version 33
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.37% 0.289
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.2 2.5 3.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 4.9 3.9 6.9
AV:L/AC:L/Au:N/C:N/I:N/A:C
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 intended restrictions on the size or number of resources that can be allocated.

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/
https://security.gentoo.org/glsa/202107-30
Third Party Advisory
https://www.debian.org/security/2020/dsa-4812
Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/16/4
Third Party Advisory
Mailing List
https://xenbits.xenproject.org/xsa/advisory-358.html
Patch
Vendor Advisory