VDB
DEBIAN-CVE-2021-22543
DEBIAN-CVE-2021-22543
PUBLISHED
CVSS 7.800000190734863 HIGH
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.
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | linux | 0, 0, 0 |
| Debian:11 | linux | 0, 0, 0 |
| Debian:13 | linux | 0, 0, 0 |
| Debian:14 | linux | 0, 0, 0 |
Timeline
- May 26, 2021 CVE Published
- Apr 28, 2026 CVE Updated