vulnerability
Ubuntu: (CVE-2020-29570): xen vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:N/I:N/A:C) | Dec 15, 2020 | Jun 26, 2025 | Mar 27, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
Dec 15, 2020
Added
Jun 26, 2025
Modified
Mar 27, 2026
Description
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.
Solution
no-fix-ubuntu-package
Rapid7 Labs
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