vulnerability
Alma Linux: CVE-2021-22543: Important: kernel security, bug fix, and enhancement update (ALSA-2021-3057)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | May 26, 2021 | May 4, 2022 | Mar 31, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
May 26, 2021
Added
May 4, 2022
Modified
Mar 31, 2026
Description
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
Solution
alma-upgrade-kernel-tools-libs-devel
Rapid7 Labs
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