CVE-2021-26339
First published: Wed May 11 2022(Updated: )
A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.
Credit: psirt@amd.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| AMD EPYC 7763 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7763 Firmware | ||
| AMD EPYC 7713P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7713P Firmware | ||
| AMD EPYC 7713P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7713 Firmware | ||
| AMD EPYC 7663 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7663 Firmware | ||
| AMD EPYC 7643P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7643 Firmware | ||
| AMD EPYC 75F3 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 75F3 Firmware | ||
| AMD EPYC 7543P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7543P Firmware | ||
| Amd Epyc Server Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7543 Firmware | ||
| AMD EPYC 7513 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7513 Firmware | ||
| Amd Epyc Server Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC Server | ||
| AMD EPYC 74F3 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 74F3 Firmware | ||
| AMD EPYC 7443P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7443P Firmware | ||
| AMD EPYC 7443P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7443P | ||
| AMD EPYC 7413 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7413 Firmware | ||
| AMD EPYC 73F3 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 73F3 Firmware | ||
| Amd Epyc Server Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7343 Firmware | ||
| AMD EPYC 7313P Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7313P Firmware | ||
| AMD EPYC Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7313 Firmware | ||
| AMD EPYC 72F3 Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 72F3 Firmware | ||
| AMD EPYC 7773X Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7773X Firmware | ||
| AMD EPYC 7473X Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7473X Firmware | ||
| AMD EPYC 7573X Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7573X Firmware | ||
| AMD EPYC 7373X Firmware | <milanpi-sp3_1.0.0.7 | |
| AMD EPYC 7373X Firmware | ||
| AMD Ryzen 7 5700G Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 7 5700G Firmware | ||
| AMD Ryzen 7 5700GE Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 7 5700GE Firmware | ||
| AMD Ryzen 5 5700G Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 5 5700G | ||
| AMD Ryzen 5 5700GE Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 5 5700GE | ||
| AMD Ryzen 3 5300G Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 3 5300G Firmware | ||
| AMD Ryzen 5300GE Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 3 5300GE Firmware | ||
| AMD Ryzen 4700G Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 7 4700G Firmware | ||
| AMD Ryzen 7 4700GE Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 7 4700GE Firmware | ||
| AMD Ryzen 4600G Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 4600G Firmware | ||
| AMD Ryzen 4600GE Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 5 4600GE firmware | ||
| AMD Ryzen 3 4300G Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 3 4300G Firmware | ||
| AMD Ryzen 4300GE Firmware | <comboam4_v2_pi_1.2.0.6c | |
| AMD Ryzen 4300GE Firmware | ||
| AMD Ryzen Threadripper Pro | ||
| AMD Ryzen Threadripper Pro 3945WX Firmware | ||
| AMD Ryzen Threadripper Pro 3955WX Firmware | ||
| AMD Ryzen Threadripper Pro 3955WX Firmware | ||
| AMD Ryzen Threadripper Pro 3975WX Firmware | ||
| AMD Ryzen Threadripper Pro 3975WX Firmware | ||
| AMD Ryzen Threadripper Pro 3995WX Firmware | ||
| AMD Ryzen Threadripper Pro | ||
| AMD Ryzen Threadripper Pro 5945WX Firmware | ||
| AMD Ryzen Threadripper Pro 5945WX Firmware | ||
| AMD Ryzen Threadripper Pro 5955WX Firmware | ||
| AMD Ryzen Threadripper Pro 5955WX Firmware | ||
| AMD Ryzen Threadripper Pro 5965WX Firmware | ||
| AMD Ryzen Threadripper Pro | ||
| AMD Ryzen Threadripper Pro 5975W Firmware | ||
| AMD Ryzen Threadripper Pro 5975W Firmware | ||
| AMD Ryzen Threadripper Pro 5995WX Firmware | ||
| AMD Ryzen Threadripper Pro 5995WX Firmware | ||
| AMD Ryzen 3 2200U Firmware | ||
| AMD Ryzen 3 2200U Firmware | ||
| AMD Ryzen 3 2300U Firmware | ||
| AMD Ryzen 3 Pro 2300U | ||
| AMD Ryzen 3 Pro 2300U Firmware | ||
| AMD Ryzen 3 Pro 2300U Firmware | ||
| AMD Ryzen 5 Pro 2500U Firmware | ||
| AMD Ryzen 5 Pro 2500U | ||
| AMD Ryzen 5 Pro 2500U Firmware | ||
| AMD Ryzen 5 Pro 2500U Firmware | ||
| AMD Ryzen 5 2600H Firmware | ||
| AMD Ryzen 5 2600H | ||
| AMD Ryzen 7 Pro 2700U Firmware | ||
| AMD Ryzen 7 Pro 2700U | ||
| AMD Ryzen 7 Pro 2700U Firmware | ||
| AMD Ryzen 7 Pro 2700U Firmware | ||
| AMD Ryzen 7 2800H Firmware | ||
| AMD Ryzen 7 2800H Firmware | ||
| AMD Ryzen 3 3300G Firmware | ||
| AMD Ryzen 3 3300G Firmware | ||
| AMD Ryzen 3 3300X Firmware | ||
| AMD Ryzen 3 3300X Firmware | ||
| AMD Ryzen 3100 Firmware | ||
| AMD Ryzen 3 3100 Firmware | ||
| AMD Ryzen 3 Pro 3300U Firmware | ||
| AMD Ryzen 3 Pro 3300U Firmware | ||
| AMD Ryzen 5 Pro 3400G Firmware | ||
| AMD Ryzen 5 3400G Firmware | ||
| AMD Ryzen 5 3450G Firmware | ||
| AMD Ryzen 5 3450G Firmware | ||
| AMD Ryzen 5 3600 firmware | ||
| AMD Ryzen 5 3600 firmware | ||
| AMD Ryzen 5 3600X Firmware | ||
| AMD Ryzen 5 3600X Firmware | ||
| AMD Ryzen 5 Pro 3500U Firmware | ||
| AMD Ryzen 5 Pro 3500U Firmware | ||
| AMD Ryzen 7 3700X Firmware | ||
| AMD Ryzen 7 3700XT | ||
| AMD Ryzen 7 3800XT Firmware | ||
| AMD Ryzen 7 3800X Firmware | ||
| AMD Ryzen 7 Pro 3700U Firmware | ||
| AMD Ryzen 7 Pro 3700U Firmware | ||
| AMD Ryzen 9 5980HX | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 9 5980HX | ||
| AMD Ryzen 9 5980HS Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 9 5980HS Firmware | ||
| AMD Ryzen 7 5825U Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 7 5825U Firmware | ||
| AMD Ryzen 9 5900HX Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 9 5900HX Firmware | ||
| AMD Ryzen 9 5900HS Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 9 5900HS Firmware | ||
| AMD Ryzen 7 5825C Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 7 5825C Firmware | ||
| AMD Ryzen 7 5800H Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 7 5800H Firmware | ||
| AMD Ryzen 5 5625U Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 5 5625U Firmware | ||
| AMD Ryzen 7 5800HS Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 7 5800HS Firmware | ||
| AMD Ryzen 5 5625C Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 5 5625C Firmware | ||
| AMD Ryzen 5 5600H Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 5 5600H Firmware | ||
| AMD Ryzen 5 5600HS Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 5 5600HS Firmware | ||
| AMD Ryzen 7 5800U Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 7 5800U Firmware | ||
| AMD Ryzen 5 5600U Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 5 5600U Firmware | ||
| AMD Ryzen 5 5560U Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 5 5560U Firmware | ||
| AMD Ryzen 3 5425U | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 3 5425U Firmware | ||
| AMD Ryzen 3 5425C Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 3 5425C Firmware | ||
| AMD Ryzen 3 5400U Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 3 5400U Firmware | ||
| AMD Ryzen 3 5125C Firmware | <cezannepi-fp6_1.0.0.9a | |
| AMD Ryzen 3 5125C Firmware |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-26339?
CVE-2021-26339 is categorized as a potential denial of service vulnerability.
How do I fix CVE-2021-26339?
To fix CVE-2021-26339, update the affected AMD EPYC and Ryzen firmware to a version that includes the required patches.
Which systems are affected by CVE-2021-26339?
CVE-2021-26339 affects various firmware versions for AMD EPYC and Ryzen processors, particularly those before milanpi-sp3_1.0.0.7 and comboam4_v2_pi_1.2.0.6c.
Can CVE-2021-26339 be exploited remotely?
While CVE-2021-26339 requires specific conditions and an unprivileged VM, it poses a risk of denial of service if successfully exploited.
What are the implications of CVE-2021-26339?
The implications of CVE-2021-26339 include potential downtime and service disruption for systems using vulnerable AMD hardware.
- agent/references
- agent/type
- agent/severity
- agent/author
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/amd
- canonical/amd epyc 7763 firmware
- canonical/amd epyc 7713p firmware
- canonical/amd epyc 7713 firmware
- canonical/amd epyc 7663 firmware
- canonical/amd epyc 7643p firmware
- canonical/amd epyc 7643 firmware
- canonical/amd epyc 75f3 firmware
- canonical/amd epyc 7543p firmware
- canonical/amd epyc server firmware
- canonical/amd epyc 7543 firmware
- canonical/amd epyc 7513 firmware
- canonical/amd epyc server
- canonical/amd epyc 74f3 firmware
- canonical/amd epyc 7443p firmware
- canonical/amd epyc 7443p
- canonical/amd epyc 7413 firmware
- canonical/amd epyc 73f3 firmware
- canonical/amd epyc 7343 firmware
- canonical/amd epyc 7313p firmware
- canonical/amd epyc firmware
- canonical/amd epyc 7313 firmware
- canonical/amd epyc 72f3 firmware
- canonical/amd epyc 7773x firmware
- canonical/amd epyc 7473x firmware
- canonical/amd epyc 7573x firmware
- canonical/amd epyc 7373x firmware
- canonical/amd ryzen 7 5700g firmware
- canonical/amd ryzen 7 5700ge firmware
- canonical/amd ryzen 5 5700g firmware
- canonical/amd ryzen 5 5700g
- canonical/amd ryzen 5 5700ge firmware
- canonical/amd ryzen 5 5700ge
- canonical/amd ryzen 3 5300g firmware
- canonical/amd ryzen 5300ge firmware
- canonical/amd ryzen 3 5300ge firmware
- canonical/amd ryzen 4700g firmware
- canonical/amd ryzen 7 4700g firmware
- canonical/amd ryzen 7 4700ge firmware
- canonical/amd ryzen 4600g firmware
- canonical/amd ryzen 4600ge firmware
- canonical/amd ryzen 5 4600ge firmware
- canonical/amd ryzen 3 4300g firmware
- canonical/amd ryzen 4300ge firmware
- canonical/amd ryzen threadripper pro
- canonical/amd ryzen threadripper pro 3945wx firmware
- canonical/amd ryzen threadripper pro 3955wx firmware
- canonical/amd ryzen threadripper pro 3975wx firmware
- canonical/amd ryzen threadripper pro 3995wx firmware
- canonical/amd ryzen threadripper pro 5945wx firmware
- canonical/amd ryzen threadripper pro 5955wx firmware
- canonical/amd ryzen threadripper pro 5965wx firmware
- canonical/amd ryzen threadripper pro 5975w firmware
- canonical/amd ryzen threadripper pro 5995wx firmware
- canonical/amd ryzen 3 2200u firmware
- canonical/amd ryzen 3 2300u firmware
- canonical/amd ryzen 3 pro 2300u
- canonical/amd ryzen 3 pro 2300u firmware
- canonical/amd ryzen 5 pro 2500u firmware
- canonical/amd ryzen 5 pro 2500u
- canonical/amd ryzen 5 2600h firmware
- canonical/amd ryzen 5 2600h
- canonical/amd ryzen 7 pro 2700u firmware
- canonical/amd ryzen 7 pro 2700u
- canonical/amd ryzen 7 2800h firmware
- canonical/amd ryzen 3 3300g firmware
- canonical/amd ryzen 3 3300x firmware
- canonical/amd ryzen 3100 firmware
- canonical/amd ryzen 3 3100 firmware
- canonical/amd ryzen 3 pro 3300u firmware
- canonical/amd ryzen 5 pro 3400g firmware
- canonical/amd ryzen 5 3400g firmware
- canonical/amd ryzen 5 3450g firmware
- canonical/amd ryzen 5 3600 firmware
- canonical/amd ryzen 5 3600x firmware
- canonical/amd ryzen 5 pro 3500u firmware
- canonical/amd ryzen 7 3700x firmware
- canonical/amd ryzen 7 3700xt
- canonical/amd ryzen 7 3800xt firmware
- canonical/amd ryzen 7 3800x firmware
- canonical/amd ryzen 7 pro 3700u firmware
- canonical/amd ryzen 9 5980hx
- canonical/amd ryzen 9 5980hs firmware
- canonical/amd ryzen 7 5825u firmware
- canonical/amd ryzen 9 5900hx firmware
- canonical/amd ryzen 9 5900hs firmware
- canonical/amd ryzen 7 5825c firmware
- canonical/amd ryzen 7 5800h firmware
- canonical/amd ryzen 5 5625u firmware
- canonical/amd ryzen 7 5800hs firmware
- canonical/amd ryzen 5 5625c firmware
- canonical/amd ryzen 5 5600h firmware
- canonical/amd ryzen 5 5600hs firmware
- canonical/amd ryzen 7 5800u firmware
- canonical/amd ryzen 5 5600u firmware
- canonical/amd ryzen 5 5560u firmware
- canonical/amd ryzen 3 5425u
- canonical/amd ryzen 3 5425u firmware
- canonical/amd ryzen 3 5425c firmware
- canonical/amd ryzen 3 5400u firmware
- canonical/amd ryzen 3 5125c firmware