CVE-2021-26348

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.

Metrics

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

Affected software

No affected versions have been published.

Timeline

Published
May 11, 2022
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-263495.5Failure to assign a new report ID to an imported guest may potentially result in an SEV-SNP guest VM being tricked into trusting a dishonestCVE-2021-263504.7A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register which may result in CVE-2021-263515.5Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA (Direct Memory Access) read/write from/to invalid DCVE-2021-263525.5Insufficient bound checks in System Management Unit (SMU) PCIe Hot Plug table may result in access/updates from/to invalid address space thaCVE-2021-263537.8Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state CVE-2021-263545.5Insufficient bounds checking in ASP may allow an attacker to issue a system call from a compromised ABL which may cause arbitrary memory valCVE-2021-263555.5Insufficient fencing and checks in System Management Unit (SMU) may result in access to invalid message port registers that could result in CVE-2021-263567.4A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially resulting in S3 data cCVE-2021-263607.8An attacker with local access to the system can make unauthorized modifications of the security configuration of the SOC registers. This couCVE-2021-263615.5A malicious or compromised User Application (UApp) or AGESA Boot Loader (ABL) could be used by an attacker to exfiltrate arbitrary memory frCVE-2021-263627.1A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call which results in mapping sensitive SystemCVE-2021-263634.4A malicious or compromised UApp or ABL could potentially change the value that the ASP uses for its reserved DRAM, to one outside of the fen
CVE-2021-26348: Medium severity, CVSS 5.5 | Vulnix