==36913==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60400000054d at pc 0x7fb5cf29ac7d bp 0x7ffc97cfe350 sp 0x7ffc97cfe348
READ of size 1 at 0x60400000054d thread T0
#0 0x7fb5cf29ac7c in load_sixel /home/tmp/libsixel/src/loader.c:629:36
#1 0x7fb5cf29ac7c in load_with_builtin /home/tmp/libsixel/src/loader.c:782
#2 0x7fb5cf29ac7c in sixel_helper_load_image_file /home/tmp/libsixel/src/loader.c:1352
#3 0x7fb5cf4d8d4f in sixel_encoder_encode /home/tmp/libsixel/src/encoder.c:1737:14
#4 0x51787f in main /home/tmp/libsixel/converters/img2sixel.c:457:22
#5 0x7fb5cd83bb96 in __libc_start_main /build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310
#6 0x41a379 in _start (/home/tmp/img2sixel+0x41a379)
Address 0x60400000054d is a wild pointer.
SUMMARY: AddressSanitizer: heap-buffer-overflow /home/tmp/libsixel/src/loader.c:629:36 in load_sixel
Shadow bytes around the buggy address:
0x0c087fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff8090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c087fff80a0: fa fa fa fa fa fa fa fa fa[fa]fa fa fa fa fa fa
0x0c087fff80b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff80c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff80d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff80e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff80f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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
==36913==ABORTING
The text was updated successfully, but these errors were encountered:
version : img2sixel 1.8.2
There is a heap-buffer-overflow in load_sixel at loader.c:629
please run following cmd to reproduce it.
poc
ASAN LOG
The text was updated successfully, but these errors were encountered: