From 6b58eaac4ddc36d46bb4611efede18f0a9a530d1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 28 May 2020 14:33:58 +0200 Subject: [PATCH] avcodec/h264dec: Disable forced small_padding on flag2 fast Fixes: 20978/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5746381832847360 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/h264.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 4fc2aed302..1f399ab838 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -293,12 +293,9 @@ const uint8_t *ff_h264_decode_nal(H264Context *h, H264SliceContext *sl, if(i>=length-1){ //no escaped 0 *dst_length= length; *consumed= length+1; //+1 for the header - if(h->avctx->flags2 & AV_CODEC_FLAG2_FAST){ - return src; - }else{ - memcpy(dst, src, length); - return dst; - } + + memcpy(dst, src, length); + return dst; } memcpy(dst, src, i);