#61 Segmentation Fault in read_objects() function

[Suhwan Song]

Hi,
I found a Segmentation Fault in read_objects() at read.c:459
Please run following command to reproduce it,

fig2dev -L box $PoC

Here's log

ASAN:DEADLYSIGNAL
=================================================================
==31429==ERROR: AddressSanitizer: SEGV on unknown address 0x55b05140a000 (pc 0x55b05100e77a bp 0x7ffdad9e4b20 sp 0x7ffdad9e49d0 T0)
==31429==The signal is caused by a READ memory access.
    #0 0x55b05100e779 in read_objects fig2dev-3.2.7b/fig2dev/read.c:459
    #1 0x55b05100d1d3 in readfp_fig fig2dev-3.2.7b/fig2dev/read.c:172
    #2 0x55b05100d0a9 in read_fig fig2dev-3.2.7b/fig2dev/read.c:142
    #3 0x55b051004ef3 in main fig2dev-3.2.7b/fig2dev/fig2dev.c:422
    #4 0x7fb59892db96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #5 0x55b050ff5979 in _start (fig2dev-3.2.7b+0x6e979)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV fig2dev-3.2.7b/fig2dev/read.c:459 in read_objects
==31429==ABORTING

fig2dev Version 3.2.7b
I also tested this in git Commit [3065ab] and can reproduce it.

[tkl]

Fixed with commit [41b9bb].