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avcodec/indeo4: Check remaining data in Pic hdr extension parsing code

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Fixes: Timeout
Fixes: 2115/clusterfuzz-testcase-minimized-6594111748440064

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a3b5b60bdf)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-06-08 13:58:47 +02:00
parent cd16f4cf4b
commit 26afadbd29
1 changed files with 2 additions and 0 deletions
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2
libavcodec/indeo4.c
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@ -237,6 +237,8 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
/* skip picture header extension if any */
while (get_bits1(&ctx->gb)) {
ff_dlog(avctx, "Pic hdr extension encountered!\n");
if (get_bits_left(&ctx->gb) < 10)
return AVERROR_INVALIDDATA;
skip_bits(&ctx->gb, 8);
}