Memory leak detected

[fCorleone]

Memory leaks detected when running program sixel2png the input file is map8.six, with address sanitizer.

=================================================================
==8599==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 65536 byte(s) in 1 object(s) allocated from:
    #0 0x7fe68bb70602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x7fe68b87cae8 in sixel_decoder_decode /home/mfc_fuzz/libsixel/src/decoder.c:277

Direct leak of 1302 byte(s) in 1 object(s) allocated from:
    #0 0x7fe68bb70602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x7fe68b790377 in image_buffer_resize /home/mfc_fuzz/libsixel/src/fromsixel.c:292

Direct leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x7fe68bb70602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x7fe68b798631 in sixel_decode_raw /home/mfc_fuzz/libsixel/src/fromsixel.c:887

[fCorleone]

Another memory leak detected .

=================================================================
==8561==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 40 byte(s) in 1 object(s) allocated from:
    #0 0x7fc7ef07b602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x7fc7eed9c9ba in sixel_allocator_new /home/mfc_fuzz/libsixel/src/allocator.c:75

The program I ran is img2sixel and the input file is map8.png.

[fgeek]

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14072 and https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14073 has been assigned for these issues (not requested by me). This is also tracked in Debian: https://bugs.debian.org/903858

[saitoha]

@fCorleone @fgeek Thanks for reporting!