CVE-2021-28712
First published: Wed Jan 05 2022(Updated: )
Last updated 18 February 2025
Credit: security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | ||
| Debian GNU/Linux | =9.0 | |
| Debian GNU/Linux | =10.0 | |
| Debian GNU/Linux | =11.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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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-2021-28712
- https://xenbits.xen.org/xsa/advisory-391.html
- https://security-tracker.debian.org/tracker/CVE-2021-28712
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28712
- https://nvd.nist.gov/vuln/detail/CVE-2021-28712
- https://ubuntu.com/security/CVE-2021-28712
Frequently Asked Questions
What is the severity of CVE-2021-28712?
CVE-2021-28712 has a high severity severity rating due to its potential for Denial of Service.
How do I fix CVE-2021-28712?
To fix CVE-2021-28712, ensure that you update to the latest patched versions of the affected Linux packages.
Which software is affected by CVE-2021-28712?
CVE-2021-28712 affects various versions of the Linux kernel, including Debian Linux versions 9.0, 10.0, and 11.0.
What types of attacks can exploit CVE-2021-28712?
CVE-2021-28712 can be exploited by rogue backends that generate high-frequency events leading to a Denial of Service.
Is CVE-2021-28712 related to other vulnerabilities?
Yes, CVE-2021-28712 is part of a collection of vulnerabilities that affect the Xen hypervisor and its backend implementations.
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- version/debian gnu/linux/10.0
- version/debian gnu/linux/11.0
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