Fixes: out of array read Fixes: 24034/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5111884337119232
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/tiff.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 6a3ec3ef95..18b327e800 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -882,6 +882,9 @@ static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame, int is_single_comp, is_u16, pixel_size; int ret; + if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb)) + return AVERROR_INVALIDDATA; + /* Prepare a packet and send to the MJPEG decoder */ av_init_packet(&jpkt); jpkt.data = (uint8_t*)s->gb.buffer; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
