amd64-microcode: Improper handling of overlap between the segmented reverse map table (RMP) and system management mode (SMM) memory co...
CVE-2025-0012 is fixed in amd64-microcode on 1 platform, first by amd64-microcode 3.20251202.1ubuntu0.25.10.1, released January 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Improper handling of overlap between the segmented reverse map table (RMP) and system management mode (SMM) memory could allow a privileged attacker corrupt or partially infer SMM memory resulting in loss of integrity or confidentiality.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| amd64-microcode · Debian 14 | 3.20260923.1 | DEBIAN-CVE-2025-0012 | Feb 10, 2026 |
| amd64-microcode · Ubuntu 24.04.5 LTS (noble) | 3.20251202.1ubuntu0.24.04.1 | amd64-microcode 3.20251202.1ubuntu0.24.04.1 | May 12, 2026 |
| amd64-microcode · Ubuntu 25.10 (questing) | 3.20251202.1ubuntu0.25.10.1 | amd64-microcode 3.20251202.1ubuntu0.25.10.1 | Jan 16, 2026 |
| amd64-microcode · Ubuntu 26.04.1 LTS (resolute) | 3.20251202.1ubuntu1 | amd64-microcode 3.20251202.1ubuntu1 | May 12, 2026 |
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