From 96d45c3b212689f82bff2530c3637405df9e9369 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 3 Nov 2024 20:54:29 +0100 Subject: [PATCH] avformat/vividas: Check avio_read() for failure Fixes: use of uninitialized value (untested) Fixes: 42537627/clusterfuzz-testcase-minimized-fuzzer_loadfile_direct-5505802505355264 Found-by: ossfuzz Reported-by: Kacper Michajlow Signed-off-by: Michael Niedermayer --- libavformat/vividas.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/vividas.c b/libavformat/vividas.c index 130b81ebbe..bec4ad7cec 100644 --- a/libavformat/vividas.c +++ b/libavformat/vividas.c @@ -567,7 +567,8 @@ static int viv_read_header(AVFormatContext *s) v = avio_r8(pb); avio_seek(pb, v, SEEK_CUR); - avio_read(pb, keybuffer, 187); + if (avio_read(pb, keybuffer, 187) != 187) + return AVERROR_INVALIDDATA; key = decode_key(keybuffer); viv->sb_key = key;