[Bug 777532] New: avidemux: invalid memory read in gst_avi_demux_parse_ncdt

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=777532

            Bug ID: 777532
           Summary: avidemux: invalid memory read in
                    gst_avi_demux_parse_ncdt
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: hanno at hboeck.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

This may be a followup bug of the fix of
https://bugzilla.gnome.org/show_bug.cgi?id=777500

file:
https://samples.mplayerhq.hu/ffmpeg-bugs/trac/ticket3330/DSCN0902.AVI

asan trace:
==31237==ERROR: AddressSanitizer: SEGV on unknown address 0x622000023fbc (pc
0x7fb741b01274 bp 0x7fb74184b5b0 sp 0x7fb74184b420 T2)
==31237==The signal is caused by a READ memory access.
    #0 0x7fb741b01273 in __gst_fast_read16
/usr/include/gstreamer-1.0/gst/gstutils.h:119:10
    #1 0x7fb741b01273 in gst_avi_demux_parse_ncdt
/f/gstreamer/gst-plugins-good/gst/avi/gstavidemux.c:3910
    #2 0x7fb741aee4ae in gst_avi_demux_stream_header_pull
/f/gstreamer/gst-plugins-good/gst/avi/gstavidemux.c:4248:13
    #3 0x7fb741ae6796 in gst_avi_demux_loop
/f/gstreamer/gst-plugins-good/gst/avi/gstavidemux.c:5691:13
    #4 0x7fb74ed81973 in gst_task_func
/f/gstreamer/gstreamer/gst/gsttask.c:334:5
    #5 0x7fb74df7eb2d in g_thread_pool_thread_proxy
/var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gthreadpool.c:307
    #6 0x7fb74df7e154 in g_thread_proxy
/var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gthread.c:784
    #7 0x7fb74d9fc453 in start_thread (/lib64/libpthread.so.0+0x7453)
    #8 0x7fb74d52c5dc in clone (/lib64/libc.so.6+0xe75dc)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
/usr/include/gstreamer-1.0/gst/gstutils.h:119:10 in __gst_fast_read16
Thread T2 (avidemux0:sink) created by T1 (typefind:sink) here:
    #0 0x42df2d in __interceptor_pthread_create
(/usr/bin/gst-discoverer-1.0+0x42df2d)
    #1 0x7fb74df9b1bf in g_system_thread_new
/var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gthread-posix.c:1170

Thread T1 (typefind:sink) created by T0 here:
    #0 0x42df2d in __interceptor_pthread_create
(/usr/bin/gst-discoverer-1.0+0x42df2d)
    #1 0x7fb74df9b1bf in g_system_thread_new
/var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gthread-posix.c:1170

==31237==ABORTING

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