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79704b8213
It was possible for a third party that had 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. This commit removes the local stack variable `xRunningPrivileged` so that a manually crafted stack frame cannot be used for privilege escalation by branching directly inside a FreeRTOS MPU API wrapper. We thank Certibit Consulting, LLC, Huazhong University of Science and Technology and the SecLab team at Northeastern University for reporting this issue. Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com> |
2 years ago | |
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ARM7_LPC21xx | 4 years ago | |
ARM_CA9 | 4 years ago | |
ARM_CM0 | 4 years ago | |
ARM_CM3 | 3 years ago | |
ARM_CM4F | 3 years ago | |
ARM_CM4_MPU | 2 years ago | |
ARM_CM7 | 3 years ago |