Fixes: out of array read Fixes: 20659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CDTOONS_fuzzer-5754518731227136
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/cdtoons.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/cdtoons.c b/libavcodec/cdtoons.c index 13f9a60f0f..a8609815c1 100644 --- a/libavcodec/cdtoons.c +++ b/libavcodec/cdtoons.c @@ -190,6 +190,9 @@ static int cdtoons_decode_frame(AVCodecContext *avctx, void *data, palette_set = bytestream_get_byte(&buf); buf += 5; + if (sprite_offset > buf_size) + return AVERROR_INVALIDDATA; + /* read new sprites introduced in this frame */ buf = avpkt->data + sprite_offset; while (sprite_count--) { -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
