vulnerability
Alpine Linux: CVE-2021-26933: Vulnerability in Multiple Components
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | Feb 17, 2021 | Mar 26, 2024 | Dec 22, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
Feb 17, 2021
Added
Mar 26, 2024
Modified
Dec 22, 2025
Description
An issue was discovered in Xen 4.9 through 4.14.x. On Arm, a guest is allowed to control whether memory accesses are bypassing the cache. This means that Xen needs to ensure that all writes (such as the ones during scrubbing) have reached the memory before handing over the page to a guest. Unfortunately, the operation to clean the cache is happening before checking if the page was scrubbed. Therefore there is no guarantee when all the writes will reach the memory.
Solution
alpine-linux-upgrade-xen
NEW
Explore Exposure Command
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