From cf28521fee22dbe2f7eeb8ab0306c0fd0802c48a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 30 May 2020 00:43:46 +0200 Subject: [PATCH] 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 --- libavcodec/hq_hqa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/hq_hqa.c b/libavcodec/hq_hqa.c index eec2e980b3..8404e80ec8 100644 --- a/libavcodec/hq_hqa.c +++ b/libavcodec/hq_hqa.c @@ -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; }