Hello Developers,
We are encountering a consistent Kernel Panic issue on an iPhone device after sending a "Clear Passcode" command via our MDM solution. We're looking for insights or confirmation if others have experienced similar behavior.
Device & Environment Details:
Device: iPhone13,2 (iPhone 12 Pro)
OS Version: iPhone OS 18.3.2 (Build 22D82) (Please note this appears to be a future/beta build identifier)
Action Triggering Panic: Sending MDM ClearPasscode command.
Roots Installed: 0 (Device is not jailbroken)
Incident ID: 4B41C0AE-EE93-4051-BEE4-AB98438C10F0
Panic Log Summary:
The kernel panic log clearly indicates the issue originates from the Secure Enclave Processor (SEP).
The key panic string is:
panic(cpu 3 caller 0xfffffff02357bc1c): SEP Panic: :sks /sks : 0x1000b15fc 0x0003ad60 0x0003ad44 0x100028698 0x10002cae4 0x10002a908 0x10002bc10 0x100045330 [hgggrhlvs]
Panic app vers: 1827.80.10 Panic app UUID: 4C066E88-EB93-33C3-BCA7-C5F5474831CC ... Root task vers: AppleSEPOS-2772.80.2 Root task UUID: A39D6C5D-D07D-33EE-85A3-9105A8D93CE2 ... sks /sks 0x329cc/0x326e0/0x1314131413141314 ert/BOOT Use code with caution. The SEP Panic and reference to :sks /sks strongly suggest an issue within the Secure Key Store subsystem of the SEP.
The panic occurred on CPU core 3.
The kernel backtrace points to the com.apple.driver.AppleSEPManager kernel extension as the immediate caller in the main kernel that initiated the panic process after receiving the signal from the SEP.
Analysis/Interpretation:
Based on the log, it appears that the MDM ClearPasscode command, which necessarily interacts with the SEP's Secure Key Store via the AppleSEPManager driver, triggered an internal fault or bug within the SEP firmware (AppleSEPOS). This SEP-level panic subsequently caused the main iOS kernel to panic.
Questions:
Has anyone else encountered similar SEP panics, specifically involving the SKS subsystem, particularly after issuing MDM commands like ClearPasscode on iOS 18.x builds (especially 18.3.2 / 22D82)?
Is this a known issue in this specific iOS/SEP firmware version?
Are there any suggested workarounds for clearing passcodes via MDM on affected devices/OS versions, or any further diagnostic steps recommended?
We appreciate any insights or shared experiences the community might have on this issue.
Thank you.