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Debian Security Advisory DSA-4804-1                   [email protected]
https://www.debian.org/security/                       Moritz Muehlenhoff
December 04, 2020                     https://www.debian.org/security/faq
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Package        : xen
CVE ID         : CVE-2020-27670 CVE-2020-27671 CVE-2020-27672 CVE-2020-27674 

Multiple vulnerabilities have been discovered in the Xen hypervisor,
which could result in denial of service, privilege escalation or
information leaks.

For the stable distribution (buster), these problems have been fixed in
version 4.11.4+57-g41a822c392-1.

We recommend that you upgrade your xen packages.

For the detailed security status of xen please refer to
its security tracker page at:

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]