CVE-2021-26393

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE) may allow an authenticated attacker with privileges to generate a valid signed TA and potentially poison the contents of the process memory with attacker controlled data resulting in a loss of confidentiality.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-401

Affected software

Vendor	Product	Versions
AMD	AMD Radeon RX 5000 Series & PRO W5000 Series	>= AMD Radeon Software, < 22.5.2; >= AMD Radeon Pro Software Enterprise, < 22.Q2; >= Enterprise Driver, < 22.10.20
AMD	AMD Radeon RX 6000 Series & PRO W6000 Series	>= AMD Radeon Software, < 22.5.2; >= AMD Radeon Pro Software Enterprise, < 22.Q2; >= Enterprise Driver, < 22.10.20
AMD	AMD Ryzen™ Embedded R1000	various
AMD	AMD Ryzen™ Embedded R2000	various
AMD	AMD Ryzen™ Embedded V1000	various
AMD	AMD Ryzen™ Embedded V2000	various

References

Timeline

Published: Nov 9, 2022
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-263964.4Insufficient validation of address mapping to IO in ASP (AMD Secure Processor) may result in a loss of memory integrity in the SNP guest.CVE-2021-263977.1Insufficient address validation, may allow an attacker with a compromised ABL and UApp to corrupt sensitive memory locations potentially res CVE-2021-263987.8Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (A CVE-2021-264004.0AMD processors may speculatively re-order load instructions which can result in stale data being observed when multiple processors are opera CVE-2021-264015.6LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.CVE-2021-264027.1Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write par CVE-2021-264036.5Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confide CVE-2021-264045.5Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.CVE-2021-264067.5Insufficient validation in parsing Owner's Certificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization) and SEV-ES CVE-2021-264075.5A randomly generated Initialization Vector (IV) may lead to a collision of IVs with the same key potentially resulting in information disclo CVE-2021-264087.1Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in l CVE-2021-264097.8Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of S