CVE-2021-46778
AMD AMD Processors
MEDIUM 5.6
At a glance
- Source
- NVD
- EPSS
- EPSS 0.24 % · percentile 15 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- AMD
- NVD status
- Modified
Description
Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.
Weaknesses (CWE)
- CWE-203 — Observable Discrepancy
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.6 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-33434
- GCVE · GCVE-0-2021-46778
Affected configurations (NVD CPE)
cpe:2.3:o:amd:athlon_3050ge_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:athlon_3150g_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:athlon_3150ge_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7001_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7002_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7003_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7232p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7251_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7252_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7261_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7262_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7272_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7281_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7282_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_72f3_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7301_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7302_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7302p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7313_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7313p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7343_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7351_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7351p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7352_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7371_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7373x_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_73f3_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7401_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7401p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7402_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7402p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7413_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7443_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7443p_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7451_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7452_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7453_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7473x_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_74f3_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:amd:epyc_7501_firmware:-:*:*:*:*:*:*:*- +139 more
Affected products
| Product | Versions |
|---|---|
| AMD · AMD Processors | affected Processor Some AMD Processors |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |