ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Thu Mar 16 02:00:17 2017 +0100| [5d996b56499f00f80b02a41bab3d6b7349e36e9d] | committer: Michael Niedermayer
avcodec/tiff: Check stripsize strippos for overflow Fixes: 861/clusterfuzz-testcase-5688284384591872 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5d996b56499f00f80b02a41bab3d6b7349e36e9d --- libavcodec/tiff.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 0be7be7..5a6573f 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -914,6 +914,11 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame) break; case TIFF_STRIP_OFFS: if (count == 1) { + if (value > INT_MAX) { + av_log(s->avctx, AV_LOG_ERROR, + "strippos %u too large\n", value); + return AVERROR_INVALIDDATA; + } s->strippos = 0; s->stripoff = value; } else @@ -925,6 +930,11 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame) break; case TIFF_STRIP_SIZE: if (count == 1) { + if (value > INT_MAX) { + av_log(s->avctx, AV_LOG_ERROR, + "stripsize %u too large\n", value); + return AVERROR_INVALIDDATA; + } s->stripsizesoff = 0; s->stripsize = value; s->strips = 1; _______________________________________________ ffmpeg-cvslog mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
