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ghostlock-oppo-watch3pro — Complete exploit research for CVE-2026-43499 (GhostLock) on OPPO Watch 3 Pro, including kernel UAF analysis, disassembly, and exploit chain development with detailed reports. | Kitploit
Tools/GitHubGitHub/rebilibin/ghostlock-oppo-watch3pro
Embedded Systems SecurityVulnerability AnalysisExploitationReverse EngineeringMobile SecurityHardware & IoT SecurityBinary Exploitation
GitHubrebilibin/ghostlock-oppo-watch3pro

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ghostlock-oppo-watch3pro

Complete exploit research for CVE-2026-43499 (GhostLock) on OPPO Watch 3 Pro, including kernel UAF analysis, disassembly, and exploit chain development with detailed reports.

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6h 43m agoNot yet reviewed

GhostLock (CVE-2026-43499) — OPPO Watch 3 Pro Complete Research Case

Complete exploitation research on CVE-2026-43499 (GhostLock, rtmutex/futex-PI stack UAF) on the OPPO Watch 3 Pro (OWW211, ColorOS Watch China version, Android 11, ARM32).

Final conclusion: the chain-walk write mechanism crashes on trigger on OPPO 00522 (msm-5.4 refactored rtmutex), making exploitation impossible. All trigger methods (T2 requeue / sched_setattr) verified to panic on real hardware; additionally, the /proc/switch/{lcd,mt,tp} trigger nodes are all blocked by SELinux. The mechanism research is fully preserved for reference on non-msm kernels / unpatched devices.

Research Contents

Directory/FileDescription
ghostlock_repo/Full exploit source code + precompiled ARM32 binaries + detailed README
ghostlock_oppo_report.mdFull exploit chain report
ghostlock_deepcopy_report_v2.mdDeep-stack stamp deep disassembly measurements (corrects direction errors in the old report)
ghostlock_depth_report.mdfreed_waiter depth analysis
ghostlock_write_target_00522_report.mdChain-walk write target (.data writable fops) analysis
_rev/kgsl vulnerability analysis (CVE-2022-22057 UAF / map_user_mem TOCTOU, both patched)
symbols_00522.txt00522 kernel kallsyms symbol table (unique on the internet)
heota_query.pyOPPO HeyOTA protocol emulation (AES-CTR, extracts 00522 firmware from the server)
decode_kallsyms.pykallsyms decoding script
*_dis.txt / *_scan*.pyDisassembly records and deep-scan scripts

Key Findings (Disassembly Measurements)

  • freed_rt_waiter depth 0xE8 (relative to W thread sp_svc)
  • prctl(PR_SET_NAME) deep-stack strncpy D=0xD0 → phase-1 stamp (covers +0x18..+0x27)
  • fremovexattr deep-stack strncpy D=0x12C → phase-2 stamp (full coverage)
  • recvmsg actual D=0xC0 (0x108 in the old report was a direction/depth error)
  • Chain-walk write target: FAKE_LOCK=0xC1ABA338 → writes unlocked_ioctl slot 0xC1ABA33C
  • Root cause of failure: the msm refactored rt_mutex_adjust_prio_chain (0xc0196c4c) [7]/out path unlock(task + orig_lock) → any real chain-walk trigger inevitably panics

Device Information

ItemValue
ModelOPPO Watch 3 Pro (OWW211)
SystemColorOS Watch China version, Android 11 (RKQ1.211102.001)

Disclaimer

This project is for learning and research purposes only. It may only be run on devices you own, and you should back up your data in advance. During exploitation, the device may crash, reboot, or lose data. The author is not responsible for any consequences resulting from misuse.

For research purposes only. Please comply with local laws and device manufacturer policies.

Download Tool
SoCSnapdragon W5+ Gen 1 (SW5100/monaco), Adreno 702v2
Kernel5.4.134-perf-00522-gb29f81177a79 (ARM32, no KASLR)
BootloaderLocked, OEM unlock disabled