$ ./jsish/jsish poc.js
==116852==ERROR: AddressSanitizer: heap-use-after-free on address 0x608000000220 at pc 0x56117e352348 bp 0x7ffdd456fd30 sp 0x7ffdd456fd20
READ of size 4 at 0x608000000220 thread T0
#0 0x56117e352347 in jsi_UserObjDelete src/jsiUserObj.c:32#1 0x56117e1a9a28 in freeUserdataTbl src/jsiInterp.c:660#2 0x56117e24d8dd in Jsi_HashClear src/jsiHash.c:507#3 0x56117e24dcd7 in Jsi_HashDelete src/jsiHash.c:526#4 0x56117e1be7d8 in jsiInterpDelete src/jsiInterp.c:1935#5 0x56117e9d5047 in jsi_main src/main.c:49#6 0x7f876ebfebf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)#7 0x56117e164969 in _start (/usr/local/bin/jsish+0xe8969)
0x608000000220 is located 0 bytes inside of 96-byte region [0x608000000220,0x608000000280)
freed by thread T0 here:
#0 0x7f876f86d7a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8)#1 0x56117e2d6a0f in Jsi_ObjDecrRefCount src/jsiObj.c:440
previously allocated by thread T0 here:
#0 0x7f876f86dd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)#1 0x56117e1d5aa4 in Jsi_Calloc src/jsiUtils.c:57
SUMMARY: AddressSanitizer: heap-use-after-free src/jsiUserObj.c:32 in jsi_UserObjDelete
Shadow bytes around the buggy address:
0x0c107fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c107fff8000: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8010: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8020: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8030: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
=>0x0c107fff8040: fa fa fa fa[fd]fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8050: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8060: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8070: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd
0x0c107fff8080: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
0x0c107fff8090: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==116852==ABORTING
The text was updated successfully, but these errors were encountered:
Jsish revision
Commit: 9fa798e
Version: v3.5.0
Build platform
Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)
Build steps
Test case
Execution steps & Output
$ ./jsish/jsish poc.js ==116852==ERROR: AddressSanitizer: heap-use-after-free on address 0x608000000220 at pc 0x56117e352348 bp 0x7ffdd456fd30 sp 0x7ffdd456fd20 READ of size 4 at 0x608000000220 thread T0 #0 0x56117e352347 in jsi_UserObjDelete src/jsiUserObj.c:32 #1 0x56117e1a9a28 in freeUserdataTbl src/jsiInterp.c:660 #2 0x56117e24d8dd in Jsi_HashClear src/jsiHash.c:507 #3 0x56117e24dcd7 in Jsi_HashDelete src/jsiHash.c:526 #4 0x56117e1be7d8 in jsiInterpDelete src/jsiInterp.c:1935 #5 0x56117e9d5047 in jsi_main src/main.c:49 #6 0x7f876ebfebf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6) #7 0x56117e164969 in _start (/usr/local/bin/jsish+0xe8969) 0x608000000220 is located 0 bytes inside of 96-byte region [0x608000000220,0x608000000280) freed by thread T0 here: #0 0x7f876f86d7a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x56117e2d6a0f in Jsi_ObjDecrRefCount src/jsiObj.c:440 previously allocated by thread T0 here: #0 0x7f876f86dd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x56117e1d5aa4 in Jsi_Calloc src/jsiUtils.c:57 SUMMARY: AddressSanitizer: heap-use-after-free src/jsiUserObj.c:32 in jsi_UserObjDelete Shadow bytes around the buggy address: 0x0c107fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c107fff8000: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8010: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8020: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8030: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd =>0x0c107fff8040: fa fa fa fa[fd]fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8050: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8060: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8070: fa fa fa fa fd fd fd fd fd fd fd fd fd fd fd fd 0x0c107fff8080: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00 0x0c107fff8090: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==116852==ABORTINGThe text was updated successfully, but these errors were encountered: