This is a longstanding Linux crash that occurs with some frequency each release.
repro steps currently unknown
SIGSEGV: invalid attempt to write memory at address 0x0000000000000003 Unknown!PlatformCrashHandler() Unknown!/lib/x86_64-linux-gnu/libpthread.so.0() [0x7fc8071b:390] Unknown!FLinuxApplication::CreateLinuxApplication() Unknown!FSlateApplication::Create() ./Engine/Binaries/Linux/UE4Editor!FEngineLoop::PreInit() [LaunchEngineLoop.cpp:1617] ./Engine/Binaries/Linux/UE4Editor!GuardedMain() [Launch.cpp:42] Unknown!CommonLinuxMain() Unknown!/lib/x86_64-linux-gnu/libc.so.6() [0x7fc7f5cc:830] Unknown!./Engine/Binaries/Linux/UE4Editor() [0x4165c:0]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-47560 in the post.