CVE-2021-28713
First published: Wed Jan 05 2022(Updated: )
Last updated 18 February 2025
Credit: security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen XAPI | ||
| Debian | =9.0 | |
| Debian | =10.0 | |
| Debian | =11.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.17-1 |
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Reference Links
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.debian.org/security/2022/dsa-5050
- https://www.debian.org/security/2022/dsa-5096
- https://xenbits.xenproject.org/xsa/advisory-391.txt
- https://launchpad.net/bugs/cve/CVE-2021-28713
- https://xenbits.xen.org/xsa/advisory-391.html
- https://security-tracker.debian.org/tracker/CVE-2021-28713
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28713
- https://nvd.nist.gov/vuln/detail/CVE-2021-28713
- https://ubuntu.com/security/CVE-2021-28713
Frequently Asked Questions
What is the severity of CVE-2021-28713?
CVE-2021-28713 has a high severity rating which indicates it poses a significant risk of denial of service (DoS) to virtual guests.
How do I fix CVE-2021-28713?
To fix CVE-2021-28713, it is recommended to upgrade to the latest patched versions of the affected Linux packages.
What impact does CVE-2021-28713 have on affected systems?
CVE-2021-28713 can lead to a denial of service condition by allowing rogue backends to generate high frequency events.
Which software is affected by CVE-2021-28713?
CVE-2021-28713 affects various versions of Debian Linux and Xen hypervisor as detailed in the vulnerability announcement.
Is CVE-2021-28713 exploitable?
Yes, CVE-2021-28713 is exploitable in configurations that allow unprivileged guests to run PV backends.
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