ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Fri Dec 4 01:07:04 2020 +0100| [fef17e89283f8b72fc125cd066dce15a875802f6] | committer: Michael Niedermayer
avcodec/cdgraphics: Check frame before clearing Fixes: null pointer dereference Fixes: 27730/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CDGRAPHICS_fuzzer-6212402236096512 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Anton Khirnov <[email protected]> Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fef17e89283f8b72fc125cd066dce15a875802f6 --- libavcodec/cdgraphics.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/cdgraphics.c b/libavcodec/cdgraphics.c index 965f43684a..263459d0f2 100644 --- a/libavcodec/cdgraphics.c +++ b/libavcodec/cdgraphics.c @@ -369,6 +369,9 @@ static void cdg_decode_flush(AVCodecContext *avctx) { CDGraphicsContext *cc = avctx->priv_data; + if (!cc->frame->data[0]) + return; + memset(cc->frame->data[0], 0, cc->frame->linesize[0] * avctx->height); if (!avctx->frame_number) memset(cc->frame->data[1], 0, AVPALETTE_SIZE); _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
