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avformat/av1dec: Fix padding in obu_get_packet()

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Fixes: stack buffer overflow (read)
Fixes: 26369/clusterfuzz-testcase-minimized-ffmpeg_dem_VIVIDAS_fuzzer-5721057325219840

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 2020-10-16 09:30:39 +02:00
parent 51002362c4
commit 2be51d14f2
1 changed files with 1 additions and 1 deletions
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2
libavformat/av1dec.c
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@ -382,7 +382,7 @@ static int obu_read_header(AVFormatContext *s)
static int obu_get_packet(AVFormatContext *s, AVPacket *pkt)
{
ObuContext *c = s->priv_data;
uint8_t header[MAX_OBU_HEADER_SIZE];
uint8_t header[MAX_OBU_HEADER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
int64_t obu_size;
int size = av_fifo_space(c->fifo);
int ret, len, type;