$ ./mjs/build/mjs poc.js
ASAN:DEADLYSIGNAL
=================================================================
==51917==ERROR: AddressSanitizer: SEGV on unknown address 0xffffffffffffff81 (pc 0x5576b72e39f0 bp 0x000000000081 sp 0x7ffd4baed160 T0)
==51917==The signal is caused by a READ memory access.
#0 0x5576b72e39ef in mjs_set_internal src/mjs_object.c:207
#1 0x5576b72e39ef in mjs_set_v src/mjs_object.c:155
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/mjs_object.c:207 in mjs_set_internal
==51917==ABORTING
mJS revision
Commit: b1b6eac
Build platform
Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)
Build steps
Test case
poc.js
Execution steps & Output
Credits: Found by OWL337 team.