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.
References
Link | Resource |
---|---|
http://www.openwall.com/lists/oss-security/2020/12/16/4 | Mailing List Third Party Advisory |
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 |
https://xenbits.xenproject.org/xsa/advisory-358.html | Patch Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2020-12-15T17:01:36
Updated: 2021-07-12T04:06:16
Reserved: 2020-12-04T00:00:00
Link: CVE-2020-29570
JSON object: View
NVD Information
Status : Modified
Published: 2020-12-15T17:15:14.753
Modified: 2023-11-07T03:21:31.957
Link: CVE-2020-29570
JSON object: View
Redhat Information
No data.
CWE