CVE & CISA-KEV Catalog

CVE-2021-26339

MEDIUM
5.5
CVSS v3
NVD

Description

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.

How to fix

Remediation Available
epyc 72f3 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7313 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7313p firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7343 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7373x firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 73f3 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7413 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7443 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7443p firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7453 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7473x firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 74f3 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7513 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7543 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7543p firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7573x firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 75f3 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7643 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7663 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7713 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7713p firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7763 firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
epyc 7773x firmwareNVD
Affected:< milanpi-sp3_1.0.0.7Fixed in:milanpi-sp3_1.0.0.7CVE-2021-26339derived from NVD
ryzen 3 4300g firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 3 4300ge firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 3 5125c firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 3 5300g firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 3 5300ge firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 3 5400u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 3 5425c firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 3 5425u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 4600g firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 5 4600ge firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 5 5560u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 5600h firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 5600hs firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 5600u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 5625c firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 5625u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 5 5700g firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 5 5700ge firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 7 4700g firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 7 4700ge firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 7 5700g firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 7 5700ge firmwareNVD
Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26339derived from NVD
ryzen 7 5800h firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 7 5800hs firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 7 5800u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 7 5825c firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 7 5825u firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 9 5900hs firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 9 5900hx firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 9 5980hs firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD
ryzen 9 5980hx firmwareNVD
Affected:< cezannepi-fp6_1.0.0.9aFixed in:cezannepi-fp6_1.0.0.9aCVE-2021-26339derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.27%probability of exploitation in 30 days
18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Vendor Advisory2
Embed a live status badge for CVE-2021-26339
CVE-2021-26339 severity badge

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.