3.3
Advisory Published
Updated

CVE-2021-26342

First published: Wed May 11 2022(Updated: )

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
Amd Epyc 7763 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7763
Amd Epyc 7713p Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7713p
Amd Epyc 7713 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7713
Amd Epyc 7663 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7663
Amd Epyc 7643 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7643
Amd Epyc 75f3 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 75f3
Amd Epyc 7543p Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7543p
Amd Epyc 7543 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7543
Amd Epyc 7513 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7513
Amd Epyc 7453 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7453
Amd Epyc 74f3 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 74f3
Amd Epyc 7443p Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7443p
Amd Epyc 7443 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7443
Amd Epyc 7413 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7413
Amd Epyc 73f3 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 73f3
Amd Epyc 7343 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7343
Amd Epyc 7313p Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7313p
Amd Epyc 7313 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7313
Amd Epyc 72f3 Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 72f3
Amd Epyc 7773x Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7773x
Amd Epyc 7473x Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7473x
Amd Epyc 7573x Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7573x
Amd Epyc 7373x Firmware<milanpi-sp3_1.0.0.7
Amd Epyc 7373x
Amd Epyc 7001 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7001
Amd Epyc 7251 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7251
Amd Epyc 7261 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7261
Amd Epyc 7281 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7281
Amd Epyc 7301 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7301
Amd Epyc 7351 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7351
Amd Epyc 7351p Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7351p
Amd Epyc 7371 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7371
Amd Epyc 7401 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7401
Amd Epyc 7401p Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7401p
Amd Epyc 7451 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7451
Amd Epyc 7501 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7501
Amd Epyc 7551 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7551
Amd Epyc 7551p Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7551p
Amd Epyc 7601 Firmware<naplespi-sp3_1.0.0.h
Amd Epyc 7601

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