Permission Bypass in ARM SMMU Drivers Affecting Android Devices

CVE-2026-58747

What is CVE-2026-58747?

The vulnerability in the ARM SMMU driver involves a logic error in the smmu_detach_dev function, which enables a potential permission bypass. This flaw allows for local escalation of privileges without requiring user interaction. Exploitation of this vulnerability could grant an attacker access to system execution privileges, posing a significant security risk to devices relying on this driver. It is essential for affected users to stay informed and apply necessary updates to mitigate potential threats.

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