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avcodec/truemotion1: Check for even width

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Fixes out of array access
Fixes: 87196d8bbc633629fc9dd851fce73e70/asan_heap-oob_26f6853_862_cov_585961513_sonic3dblast_intro-partial.avi

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 63fb5a6aef)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-09-01 04:57:22 +02:00
parent ffcd26d25b
commit 19a29c92db
1 changed files with 4 additions and 0 deletions
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4
libavcodec/truemotion1.c
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@ -402,6 +402,10 @@ static int truemotion1_decode_header(TrueMotion1Context *s)
new_pix_fmt = AV_PIX_FMT_RGB555; // RGB565 is supported as well
s->w >>= width_shift;
if (s->w & 1) {
avpriv_request_sample(s->avctx, "Frame with odd width");
return AVERROR_PATCHWELCOME;
}
if (s->w != s->avctx->width || s->h != s->avctx->height ||
new_pix_fmt != s->avctx->pix_fmt) {