Created attachment 1756895 [details]
The report contains verification steps and POC
Description of problem:
Use a specific string to call caca_import_canvas_from_memory() the program will crash
Version-Release number of selected component (if applicable):
libcaca - v0.99.beta19
Steps to Reproduce:
1.Get the source code of libcaca:
2.Compile the libcaca.so library:
$ cd libcaca
$ apt-get install automake libtool pkg-config -y
3.Copy the POC.c & POC_build.sh in /example folder
4.Run POC_build.sh to compile POC.c
==20599==ERROR: AddressSanitizer: SEGV on unknown address 0x601f1009f400 (pc 0x7fd5a381ff76 bp 0x7ffdb2f550d0 sp 0x7ffdb2f54e40 T0)
==20599==The signal is caused by a WRITE memory access.
#0 0x7fd5a381ff75 in caca_resize /work/libcaca/caca/canvas.c:475:47
#1 0x7fd5a384fdc3 in _import_ansi /work/libcaca/caca/codec/text.c:451:17
#2 0x4f921c in main /work/libcaca/examples/POC.c:43:6
#3 0x7fd5a34840b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
#4 0x41e34d in _start (/work/libcaca/examples/POC+0x41e34d)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /work/2_libfuzzer_Assignment/question3/libcaca/caca/canvas.c:475:47 in caca_resize
Reported to upstream https://github.com/cacalabs/libcaca/issues/52
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