Panic SEP Memory Protection Module error (iPhone 11 Pro)

Anyone know what this particular error relates to? is it a hardware issue or could there be an app causing this?

The phone will randomly shutdown and restart, sometimes once or twice a week sometimes 2-3 times a day. There is no particular time interval between restarts, or apps in use at the time. Also makes no difference if the phone is in use, asleep/standby or on charge.

I've included the first part of the latest panic-full log

{"bug_type":"210","timestamp":"2022-06-29 11:16:49.00 +0100","os_version":"iPhone OS 15.5 (19F77)","incident_id":"3B31AA73-289E-45E7-ADA8-274755C5E4B9"}
{
  "build" : "iPhone OS 15.5 (19F77)",
  "product" : "iPhone12,3",
  "socId" : "0x00008030",
  "kernel" : "Darwin Kernel Version 21.5.0: Thu Apr 21 21:51:27 PDT 2022; root:xnu-8020.122.1~1\/RELEASE_ARM64_T8030",
  "incident" : "3B31AA73-289E-45E7-ADA8-274755C5E4B9",
  "crashReporterKey" : "0b1cd515cd48bb8c43788a7a495ea2ba71ab67de",
  "date" : "2022-06-29 11:16:49.92 +0100",
  "panicString" : "panic(cpu 4 caller 0xfffffff012e3466c): \"SEP Memory Protection Module error\" @AppleT8030PlatformErrorHandler.cpp:727\nDebugger message: panic\nMemory ID: 0x6\nOS release type: User\nOS version: 19F77\nKernel version: Darwin Kernel Version 21.5.0: Thu Apr 21 21:51:27 PDT 2022; root:xnu-8020.122.1~1\/RELEASE_ARM64_T8030\nKernel UUID: CBEE5FC1-AA34-347C-B2F9-97D8B90ADF86\niBoot version: iBoot-7459.120.62.0.3\nsecure boot?: YES\nPaniclog version: 13\nKernel slide:      0x0000000009c4c000\nKernel text base:  0xfffffff010c50000\nmach_absolute_time: 0xca95b6e493\nEpoch Time:        sec       usec\n  Boot    : 0x62baab3f 0x00074e1e\n  Sleep   : 0x62bc264b 0x000a3091\n  Wake    : 0x62bc2655 0x00051f7c\n  Calendar: 0x62bc266f 0x00072a8d\n\nZone info:\n  Zone map: 0xffffffe0007ac000 - 0xffffffe6007ac000\n  . VM    : 0xffffffe0007ac000 - 0xffffffe0e6e10000\n  . RO    : 0xffffffe0e6e10000 - 0xffffffe133adc000\n  . GEN0  : 0xffffffe133adc000 - 0xffffffe21a140000\n  . GEN1  : 0xffffffe21a140000 - 0xffffffe3007a4000\n  . GEN2  : 0xffffffe3007a4000 - 0xffffffe3e6e0c000\n  . GEN3  : 0xffffffe3e6e0c000 - 0xffffffe4cd474000\n  . DATA  : 0xffffffe4cd474000 - 0xffffffe6007ac000\n  Metadata: 0xffffffe600fbc000 - 0xffffffe6027bc000\n  Bitmaps : 0xffffffe6027bc000 - 0xffffffe603d30000\n\nCORE 0 recently retired instr at 0xfffffff0118ff7c8\nCORE 1 recently retired instr at 0xfffffff0118ff7c8\nCORE 2 recently retired instr at 0xfffffff0118ff7c8\nCORE 3 recently retired instr at 0xfffffff0118ff7c8\nCORE 4 recently retired instr at 0xfffffff0118fe328\nCORE 5 recently retired instr at 0xfffffff0118ff7cc\nCORE 0: PC=0xfffffff0117ebfb8, LR=0xfffffff0117ebfb8, FP=0xffffffed13633f00\nCORE 1: PC=0xfffffff0117ebfb8, LR=0xfffffff0117ebfb8, FP=0xffffffed13123f00\nCORE 2: PC=0xfffffff0117ebfb8, LR=0xfffffff0117ebfb8, FP=0xffffffed13dbbf00\nCORE 3: PC=0xfffffff0117ebfb8, LR=0xfffffff0117ebfb8, FP=0xffffffed133a3f00\nCORE 4 is the one that panicked. Check the full backtrace for details.\nCORE 5: PC=0xfffffff0117ebfbc, LR=0xfffffff0117ebfb8, FP=0xffffffed13253f00\nCompressor Info: 58% of compressed pages limit (OK) and 24% of segments limit (OK) with 2 swapfiles and OK swap space\nPanicked task 0xffffffe30072c010: 5049 pages, 46 threads: pid 36: mediaserverd\nPanicked thread: 0xffffffe3e4e57020, backtrace: 0xffffffed137e38d0, tid: 582326\n\t\t  lr: 0xfffffff0117b872c  fp: 0xffffffed137e3910\n\t\t  lr: 0xfffffff0117b8444  fp: 0xffffffed137e3980\n\t\t  lr: 0xfffffff0119066c4  fp: 0xffffffed137e39a0\n\t\t  lr: 0xfffffff0118f74b0  fp: 0xffffffed137e3a10\n\t\t  lr: 0xfffffff0118f62dc  fp: 0xffffffed137e3ad0\n\t\t  lr: 0xfffffff011efc610  fp: 0xffffffed137e3ae0\n\t\t  lr: 0xfffffff0117b8120  fp: 0xffffffed137e3e70\n\t\t  lr: 0xfffffff0117b8120  fp: 0xffffffed137e3ed0\n\t\t  lr: 0xfffffff01383ffb4  fp: 0xffffffed137e3ef0\n\t\t  lr: 0xfffffff012e3466c  fp: 0xffffffed137e3f10\n\t\t  lr: 0xfffffff01313fa70  fp: 0xffffffed137e3fb0\n\t\t  lr: 0xfffffff011e46b90  fp: 0xffffffed137e3fc0\n\t\t  lr: 0xfffffff0118f7f0c  fp: 0xffffffed137e3fe0\n\t\t  lr: 0xfffffff011efc684  fp: 0xffffffed137e3ff0\n\t\t  lr: 0xfffffff0117bfffc  fp: 0xffffffed1374bb50\n\t\t  lr: 0xfffffff0117a4acc  fp: 0xffffffed1374bc90\n\t\t  lr: 0xfffffff01178d258  fp: 0xffffffed1374bcf0\n\t\t  lr: 0xfffffff0117a7f6c  fp: 0xffffffed1374bd80\n\t\t  lr: 0xfffffff0118eaae0  fp: 0xffffffed1374be50\n\t\t  lr: 0xfffffff0118f6624  fp: 0xffffffed1374bf10\n\t\t  lr: 0xfffffff011efc610  fp: 0xffffffed1374bf20\n\n",
  "panicFlags" : "0x802",
  "otherString" : "\n** Stackshot Succeeded ** Bytes Traced 264812 (Uncompressed 681488) **\n",
  "memoryStatus" : {"compressorSize":58034,"compressions":4321628,"decompressions":3138240,"busyBufferCount":0,"memoryPressureDetails":{"pagesWanted":0,"pagesReclaimed":0},"pageSize":16384,"memoryPressure":false,"memoryPages":{"active":55921,"throttled":0,"fileBacked":47743,"wired":48479,"purgeable":3830,"inactive":52356,"free":6645,"speculative":9069}},
  "processByPid" : {
    "0" :