From 9285b93143530f36a96ce1d855d51a5c54d868c9 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 23 Sep 2024 20:55:17 +0200 Subject: [PATCH] avformat/qcp: Check for read failure in header Fixes: Use of uninitialized value Fixes: 71551/clusterfuzz-testcase-minimized-ffmpeg_dem_QCP_fuzzer-4647386712965120 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit f52b9d05837c23b0c55013551bc28dce4922de0b) Signed-off-by: Michael Niedermayer --- libavformat/qcp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/qcp.c b/libavformat/qcp.c index fdf18618d2..13a479a11e 100644 --- a/libavformat/qcp.c +++ b/libavformat/qcp.c @@ -105,7 +105,8 @@ static int qcp_read_header(AVFormatContext *s) st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO; - avio_read(pb, buf, 16); + if (avio_read(pb, buf, 16) != 16) + return AVERROR_INVALIDDATA; if (is_qcelp_13k_guid(buf)) { st->codecpar->codec_id = AV_CODEC_ID_QCELP; } else if (!memcmp(buf, guid_evrc, 16)) {