afl found this one:

solo5-hvt: common/elf.c:479: elf_load_note: Assertion `note_size != 0 && note_size <= nhdr.h.n_descsz' failed.
[1]    70694 IOT instruction (core dumped)  solo5-hvt

This crashes before any code is executed, so is safe in that sense, but when solo-hvt is running potentially untrusted unikernels the coredumps could need special handling (e.g. solo5-hvt might need to be run with a coredump limit of 0).

I suggest replacing these assertions that are user triggerable with error handling that doesn't leave a coredump behind.
assertions should only be used for internal programming errors.

If needed I can share the corrupt ELF file:
/var/home/edwin/git/solo5/out/default/crashes/id:000000,sig:06,src:000002,time:52084,execs:9138,op:int8,pos:24580,val:+1