Fixes: 21089/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APNG_fuzzer-5135981419429888 Fixes: out of array read
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/pngdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c index 3ce980fc15..39e0569061 100644 --- a/libavcodec/pngdec.c +++ b/libavcodec/pngdec.c @@ -1252,7 +1252,7 @@ static int decode_frame_common(AVCodecContext *avctx, PNGDecContext *s, case MKTAG('f', 'd', 'A', 'T'): if (!CONFIG_APNG_DECODER || avctx->codec_id != AV_CODEC_ID_APNG) goto skip_tag; - if (!decode_next_dat) { + if (!decode_next_dat || length < 4) { ret = AVERROR_INVALIDDATA; goto fail; } -- 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".
