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avcodec/hq_hqa: Check info size 

Fixes: assertion failure
Fixes: 21079/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HQ_HQA_fuzzer-5737046523248640

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 cf28521fee)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-05-30 00:43:46 +02:00
parent b4c08bbd9c
commit 2f5040203b
1 changed files with 1 additions and 1 deletions
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2
libavcodec/hq_hqa.c
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@ -321,7 +321,7 @@ static int hq_hqa_decode_frame(AVCodecContext *avctx, void *data,
int info_size;
bytestream2_skip(&ctx->gbc, 4);
info_size = bytestream2_get_le32(&ctx->gbc);
if (bytestream2_get_bytes_left(&ctx->gbc) < info_size) {
if (info_size < 0 || bytestream2_get_bytes_left(&ctx->gbc) < info_size) {
av_log(avctx, AV_LOG_ERROR, "Invalid INFO size (%d).\n", info_size);
return AVERROR_INVALIDDATA;
}