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.
References
Link | Resource |
---|---|
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-2 | Release Notes Third Party Advisory |
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-3 | |
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.6 | Release Notes Third Party Advisory |
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.5.0 |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-11-17T00:00:00
Updated: 2022-10-11T00:00:00
Reserved: 2021-11-17T00:00:00
Link: CVE-2021-43997
JSON object: View
NVD Information
Status : Modified
Published: 2021-11-17T21:15:07.780
Modified: 2022-10-12T00:15:09.820
Link: CVE-2021-43997
JSON object: View
Redhat Information
No data.
CWE