amd64-microcode: Improper enforcement of the LFENCE serialization property may allow an attacker to bypass speculation barriers and po...
CVE-2024-36315 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 enforcement of the LFENCE serialization property may allow an attacker to bypass speculation barriers and potentially disclose sensitive information, potentially resulting in loss of confidentiality.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| 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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