Bug#891792: libmlt6: SIGSEGV in mlt_properties_lock causes crash in Flowblade

[Nathaniel Morck Beaver]

Package: libmlt6
Version: 6.4.1-4
Severity: normal

Dear Maintainer,



Sincerely,

Nathaniel Beaver

-- System Information:
Debian Release: 9.3
  APT prefers stable-updates

Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.0-0.bpo.3-amd64 (SMP w/4 CPU cores)

Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libmlt6 depends on:
ii  libavcodec57              7:3.2.10-1~deb9u1
ii  libavdevice57             7:3.2.10-1~deb9u1
ii  libavfilter6              7:3.2.10-1~deb9u1
ii  libavformat57             7:3.2.10-1~deb9u1
ii  libavutil55               7:3.2.10-1~deb9u1
ii  libc6                     2.24-11+deb9u1
ii  libebur128-1              1.2.2-2
ii  libepoxy0                 1.3.1-2
ii  libexif12                 0.6.21-2+b2
ii  libfftw3-double3          3.3.5-3
ii  libfontconfig1            2.11.0-6.7+b1
ii  libgcc1                   1:6.3.0-18+deb9u1
ii  libgdk-pixbuf2.0-0        2.36.5-2+deb9u2
ii  libgl1-mesa-glx [libgl1]  13.0.6-1+b2
ii  libglib2.0-0              2.50.3-2
ii  libgtk2.0-0               2.24.31-2
ii  libjack0 [libjack-0.125]  1:0.125.0-2
ii  libmlt++3                 6.4.1-4
ii  libmovit5                 1.4.0-1
ii  libpango-1.0-0            1.40.5-1
ii  libpangoft2-1.0-0         1.40.5-1
ii  libqt5core5a              5.7.1+dfsg-3+b1
ii  libqt5gui5                5.7.1+dfsg-3+b1
ii  libqt5svg5                5.7.1~20161021-2+b2
ii  libqt5widgets5            5.7.1+dfsg-3+b1
ii  libqt5xml5                5.7.1+dfsg-3+b1
ii  librtaudio5a              4.1.2~ds0-4
ii  libsamplerate0            0.1.8-8+b2
ii  libsdl1.2debian           1.2.15+dfsg1-4
ii  libsox2                   14.4.1-5+b2
ii  libstdc++6                6.3.0-18+deb9u1
ii  libswscale4               7:3.2.10-1~deb9u1
ii  libx11-6                  2:1.6.4-3
ii  libxml2                   2.9.4+dfsg1-2.2+deb9u2

Versions of packages libmlt6 recommends:
ii  libmlt-data  1:0.9.6-dmo1

libmlt6 suggests no packages.

-- no debconf information

While using Flowblade, I tried playing a video file and got a segfault and a core dump. The full backtrace is attached and the core dump is available upon request (it is 436 MiB). APT policy: (500, 'stable-updates'), (500, 'stable-debug'), (500, 'stable') Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8)

flowblade_sig11_uid1000_time1519849772.core.txt.gz
Description: application/gzip