In multiple functions of mem_protect.c, there is a possible way to execute arbitrary code due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
https://www.helpnetsecurity.com/2026/03/03/android-march-2026-security-patch-cve-2026-21385/
https://thehackernews.com/2026/03/google-confirms-cve-2026-21385-in.html
https://android.googlesource.com/kernel/common/+/f090d4b083a9ef4831f99e692c239542dd385cb4
https://android.googlesource.com/kernel/common/+/d884f499434c224285c30d460681f1ce76a8cf1f
https://android.googlesource.com/kernel/common/+/b23a5bfa1fb8f9525e21f095a87486a2bd856321
https://android.googlesource.com/kernel/common/+/7e1d15d29b7fe0f858926a8bcaf929b75db9e52a
https://android.googlesource.com/kernel/common/+/652b7b6bf9a62cc12c3a071bab4e92314f046739
https://android.googlesource.com/kernel/common/+/513ea99ae008b81dd266bf6e361627c058ddde41
https://android.googlesource.com/kernel/common/+/1bf8033b56a45165602f8116e0a0d2e767f1e8ae