CVE-2022-29900
Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions.
- Published
- Jul 12, 2022
- Updated
- Nov 20, 2024
- Assigning CNA
- AMD
- Evidence observed
- Sep 11, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:NLow · next 30 days
- Percentile
- 89.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions.
Sources
1Reproduction of the Retbleed (CVE-2022-29900/29901) micro-architectural attack in gem5. RSB underflow, Flush+Reload side-channel leak, and a verified lfence mitigation.
Responsible use
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