Source: opencv
Version: 2.4.6
Severity: important
With some video files, the following command leads to segfault:
python -c "import cv2; vid = cv2.VideoCapture('some_video ');
vid.read()"
It occurs from python, but also using C++ library.
Example of backtrace in gdb
#0 0x00007fffeca1a814 in rgb32tobgr24_MMXEXT (src=0x7fffdf7ab080
<Address 0x7fffdf7ab080 out of bounds>, dst=0x7fffdf0eb010 "",
src_size=<optimized out>) at
/build/libav-RgBsVf/libav-9.10/libswscale/x86/rgb2rgb_template.c:155
#1 0x00007fffeca13da3 in rgbToRgbWrapper (c=0x10ac0e0, src=<optimized
out>, srcStride=0x7fffffffda80, srcSliceY=0, srcSliceH=500, dst=0x7fffffffdac0,
dstStride=0x7fffffffda90) at
/build/libav-RgBsVf/libav-9.10/libswscale/swscale_unscaled.c:592
#2 0x00007fffeca1589d in sws_scale (c=<optimized out>,
srcSlice=<optimized out>, srcStride=0xab2ba0, srcSliceY=0, srcSliceH=500,
dst=<optimized out>, dstStride=0xa156a8) at
/build/libav-RgBsVf/libav-9.10/libswscale/swscale_unscaled.c:1152
#3 0x00007ffff526fefe in CvCapture_FFMPEG::retrieveFrame(int, unsigned
char**, int*, int*, int*, int*) () from
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4
#4 0x00007ffff526ffab in cvRetrieveFrame_FFMPEG () from
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4
#5 0x00007ffff526f419 in CvCapture_FFMPEG_proxy::retrieveFrame(int) ()
from /usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4
#6 0x00007ffff526dcb9 in cv::VideoCapture::retrieve(cv::Mat&, int) ()
from /usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4
#7 0x00007ffff526daa7 in cv::VideoCapture::read(cv::Mat&) () from
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4
Out of bounds address seems to be used in a call to a function from
libswscale.
Segfault occurs for at least for one uncompressed avi file
RIFF (little-endian) data, AVI, 944 x 500, 30.00 fps, video: uncompressed
but not for a compressed one
RIFF (little-endian) data, AVI, 592 x 320, 25.00 fps, video: XviD, audio:
MPEG-1 Layer 3 (stereo, 48000 Hz)
The former can be found at http://tinyurl.com/lv657fn (uncompressed,
almost 200Mo)
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.12-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
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