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avcodec/v210dec: Fix alignment check for AVX2 

Fixes: "null pointer dereference" (actually misaligned access but the tools seem not to support this)
Fixes: 14551/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_V210_fuzzer-5088609952071680

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-05-18 09:32:58 +02:00
parent c61d16cf3b
commit fbdb3aa179
1 changed files with 1 additions and 1 deletions
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2
libavcodec/v210dec.c
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@ -104,7 +104,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
&& avpkt->size - 64 >= stride * avctx->height) && avpkt->size - 64 >= stride * avctx->height)
psrc += 64; psrc += 64;
aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf); aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f);
if (aligned_input != s->aligned_input) { if (aligned_input != s->aligned_input) {
s->aligned_input = aligned_input; s->aligned_input = aligned_input;
ff_v210dec_init(s); ff_v210dec_init(s);