CVE-2021-26329

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

AMD System Management Unit (SMU) may experience an integer overflow when an invalid length is provided which may result in a potential loss of resources.

Metrics

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

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Nov 16, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-263305.5AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources.CVE-2021-263317.8AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbiCVE-2021-263327.1Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of integrity or availability.CVE-2021-263335.5An information disclosure vulnerability exists in AMD Platform Security Processor (PSP) chipset driver. The discretionary access control lisCVE-2021-263349.9The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escaCVE-2021-263357.8Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to use attacker-controlleCVE-2021-263365.5Insufficient bounds checking in System Management Unit (SMU) may cause invalid memory accesses/updates that could result in SMU hang and subCVE-2021-263375.5Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting inCVE-2021-263387.5Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM reCVE-2021-263395.5A 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 iCVE-2021-263408.4A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation CVE-2021-263416.5Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
CVE-2021-26329: Medium severity, CVSS 5.5 | Vulnix