mtk-su is an exploit tool targeting MediaTek devices that uses CVE-2020-0069 to elevate privileges from an unprivileged shell ( $ ) to a fully privileged root shell ( # ). The tool was originally developed by a developer known as "Diplomatic" on the XDA Developers forum. It works by leveraging a vulnerability within the MediaTek Command Queue (CMDQ) driver, which allows a local attacker to achieve arbitrary read/write of physical memory addresses, leading to privilege escalation.
One of the simplest potential fixes involves temporarily setting SELinux to permissive mode before running MTK-SU:
The error typically occurs when attempting to gain temporary root or execute privileged commands on MediaTek (MTK) Android devices using the mtk-su exploit tool.
: Ensure you are using the latest or most appropriate version of the tool. For example, version mtk-su failed critical init step 3
"mtk-su failed critical init step 3" is a common failure message in the MediaTek-su (mtk-su)
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: The exploit is designed for specific MediaTek chipsets and older Android security patch levels. Newer models, such as the Fire HD 8 (10th Gen), are often reported as incompatible with the standard Permission Issues mtk-su is an exploit tool targeting MediaTek devices
Go to > About Phone > Android Version . If your Security Patch Level is April 2020 or newer , mtk-su cannot execute natively on your current firmware. 2. Verify Binary Permissions
⚠️ Downgrading firmware carries risks, including potentially bricking your device if done incorrectly. Always ensure you have the correct firmware for your exact device model.
This error message, , indicates that the mtk-su exploit script was unable to prepare your device's memory or kernel environment for the root privilege escalation. One of the simplest potential fixes involves temporarily
On Android 6.0 Marshmallow and newer, Verified Boot and dm-verity modules prevent modifications to read-only partitions (such as system and vendor). This means even with mtk-su, you may not be able to make permanent changes to system files.
: Ensure you are using the latest version of the mtk-su binary. Older versions frequently fail on devices with slightly updated firmware.