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avcodec/dxv: Initialize tex_funct to NULL 

Fixes: Various anomalies
Fixes: 14493/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5071018000908288
Fixes: 14630/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5714888963391488

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 2019-06-03 11:22:36 +02:00
parent 98b122cdb9
commit e96b7a8ba6
1 changed files with 4 additions and 0 deletions
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4
libavcodec/dxv.c
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@ -1057,6 +1057,10 @@ static int dxv_decode(AVCodecContext *avctx, void *data,
avctx->pix_fmt = AV_PIX_FMT_RGBA;
avctx->colorspace = AVCOL_SPC_RGB;
ctx->tex_funct = NULL;
ctx->tex_funct_planar[0] = NULL;
ctx->tex_funct_planar[1] = NULL;
tag = bytestream2_get_le32(gbc);
switch (tag) {
case MKBETAG('D', 'X', 'T', '1'):