CVE-2021-26342
Severity Score
3.3
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
En las máquinas virtuales invitadas de SEV, la CPU puede fallar al vaciar la memoria intermedia de traducción (TLB) después de una secuencia particular de operaciones que incluye la creación de un nuevo bloque de control de máquina virtual (VMCB). El fallo en el vaciado del TLB puede causar que el microcódigo use traducciones del TLB obsoletas, lo que puede permitir una divulgación del contenido de la memoria del huésped de SEV. Los usuarios de máquinas virtuales invitadas SEV-ES/SEV-SNP no están afectados por esta vulnerabilidad
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-01-29 CVE Reserved
- 2022-05-11 CVE Published
- 2023-12-02 EPSS Updated
- 2024-09-16 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028 | 2022-05-19 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Amd Search vendor "Amd" | Epyc 7763 Firmware Search vendor "Amd" for product "Epyc 7763 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7763 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7763 Search vendor "Amd" for product "Epyc 7763" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7713p Firmware Search vendor "Amd" for product "Epyc 7713p Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7713p Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7713p Search vendor "Amd" for product "Epyc 7713p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7713 Firmware Search vendor "Amd" for product "Epyc 7713 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7713 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7713 Search vendor "Amd" for product "Epyc 7713" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7663 Firmware Search vendor "Amd" for product "Epyc 7663 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7663 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7663 Search vendor "Amd" for product "Epyc 7663" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7643 Firmware Search vendor "Amd" for product "Epyc 7643 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7643 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7643 Search vendor "Amd" for product "Epyc 7643" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 75f3 Firmware Search vendor "Amd" for product "Epyc 75f3 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 75f3 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 75f3 Search vendor "Amd" for product "Epyc 75f3" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7543p Firmware Search vendor "Amd" for product "Epyc 7543p Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7543p Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7543p Search vendor "Amd" for product "Epyc 7543p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7543 Firmware Search vendor "Amd" for product "Epyc 7543 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7543 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7543 Search vendor "Amd" for product "Epyc 7543" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7513 Firmware Search vendor "Amd" for product "Epyc 7513 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7513 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7513 Search vendor "Amd" for product "Epyc 7513" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7453 Firmware Search vendor "Amd" for product "Epyc 7453 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7453 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7453 Search vendor "Amd" for product "Epyc 7453" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 74f3 Firmware Search vendor "Amd" for product "Epyc 74f3 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 74f3 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 74f3 Search vendor "Amd" for product "Epyc 74f3" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7443p Firmware Search vendor "Amd" for product "Epyc 7443p Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7443p Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7443p Search vendor "Amd" for product "Epyc 7443p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7443 Firmware Search vendor "Amd" for product "Epyc 7443 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7443 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7443 Search vendor "Amd" for product "Epyc 7443" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7413 Firmware Search vendor "Amd" for product "Epyc 7413 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7413 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7413 Search vendor "Amd" for product "Epyc 7413" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 73f3 Firmware Search vendor "Amd" for product "Epyc 73f3 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 73f3 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 73f3 Search vendor "Amd" for product "Epyc 73f3" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7343 Firmware Search vendor "Amd" for product "Epyc 7343 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7343 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7343 Search vendor "Amd" for product "Epyc 7343" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7313p Firmware Search vendor "Amd" for product "Epyc 7313p Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7313p Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7313p Search vendor "Amd" for product "Epyc 7313p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7313 Firmware Search vendor "Amd" for product "Epyc 7313 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7313 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7313 Search vendor "Amd" for product "Epyc 7313" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 72f3 Firmware Search vendor "Amd" for product "Epyc 72f3 Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 72f3 Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 72f3 Search vendor "Amd" for product "Epyc 72f3" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7773x Firmware Search vendor "Amd" for product "Epyc 7773x Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7773x Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7773x Search vendor "Amd" for product "Epyc 7773x" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7473x Firmware Search vendor "Amd" for product "Epyc 7473x Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7473x Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7473x Search vendor "Amd" for product "Epyc 7473x" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7573x Firmware Search vendor "Amd" for product "Epyc 7573x Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7573x Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7573x Search vendor "Amd" for product "Epyc 7573x" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7373x Firmware Search vendor "Amd" for product "Epyc 7373x Firmware" | < milanpi-sp3_1.0.0.7 Search vendor "Amd" for product "Epyc 7373x Firmware" and version " < milanpi-sp3_1.0.0.7" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7373x Search vendor "Amd" for product "Epyc 7373x" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7001 Firmware Search vendor "Amd" for product "Epyc 7001 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7001 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7001 Search vendor "Amd" for product "Epyc 7001" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7251 Firmware Search vendor "Amd" for product "Epyc 7251 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7251 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7251 Search vendor "Amd" for product "Epyc 7251" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7261 Firmware Search vendor "Amd" for product "Epyc 7261 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7261 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7261 Search vendor "Amd" for product "Epyc 7261" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7281 Firmware Search vendor "Amd" for product "Epyc 7281 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7281 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7281 Search vendor "Amd" for product "Epyc 7281" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7301 Firmware Search vendor "Amd" for product "Epyc 7301 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7301 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7301 Search vendor "Amd" for product "Epyc 7301" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7351 Firmware Search vendor "Amd" for product "Epyc 7351 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7351 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7351 Search vendor "Amd" for product "Epyc 7351" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7351p Firmware Search vendor "Amd" for product "Epyc 7351p Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7351p Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7351p Search vendor "Amd" for product "Epyc 7351p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7371 Firmware Search vendor "Amd" for product "Epyc 7371 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7371 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7371 Search vendor "Amd" for product "Epyc 7371" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7401 Firmware Search vendor "Amd" for product "Epyc 7401 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7401 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7401 Search vendor "Amd" for product "Epyc 7401" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7401p Firmware Search vendor "Amd" for product "Epyc 7401p Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7401p Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7401p Search vendor "Amd" for product "Epyc 7401p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7451 Firmware Search vendor "Amd" for product "Epyc 7451 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7451 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7451 Search vendor "Amd" for product "Epyc 7451" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7501 Firmware Search vendor "Amd" for product "Epyc 7501 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7501 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7501 Search vendor "Amd" for product "Epyc 7501" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7551 Firmware Search vendor "Amd" for product "Epyc 7551 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7551 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7551 Search vendor "Amd" for product "Epyc 7551" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7551p Firmware Search vendor "Amd" for product "Epyc 7551p Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7551p Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7551p Search vendor "Amd" for product "Epyc 7551p" | - | - |
Safe
|
| Amd Search vendor "Amd" | Epyc 7601 Firmware Search vendor "Amd" for product "Epyc 7601 Firmware" | < naplespi-sp3_1.0.0.h Search vendor "Amd" for product "Epyc 7601 Firmware" and version " < naplespi-sp3_1.0.0.h" | - |
Affected
| in | Amd Search vendor "Amd" | Epyc 7601 Search vendor "Amd" for product "Epyc 7601" | - | - |
Safe
|