FreeRTOS versions 10.2.0 through 10.4.5 do not prevent non-kernel code from calling the xPortRaisePrivilege internal function to raise privilege. FreeRTOS versions through 10.4.6 do not prevent a third party that has already independently gained the ability to execute injected code to achieve further privilege escalation by branching directly inside a FreeRTOS MPU API wrapper function with a manually crafted stack frame. These issues affect ARMv7-M MPU ports, and ARMv8-M ports with MPU support enabled (i.e. configENABLE_MPU set to 1). These are fixed in V10.5.0 and in V10.4.3-LTS Patch 3.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-11-17T00:00:00

Updated: 2024-08-04T04:10:16.905Z

Reserved: 2021-11-17T00:00:00

Link: CVE-2021-43997

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-11-17T21:15:07.780

Modified: 2024-11-21T06:30:10.423

Link: CVE-2021-43997

cve-icon Redhat

No data.