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avformat/vividas: Check avio_read() for failure

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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 <michael@niedermayer.cc>
(cherry picked from commit 96d45c3b21)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2024-11-03 20:54:29 +01:00
parent 445065e23a
commit c7aa0c4ecd
1 changed files with 2 additions and 1 deletions
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3
libavformat/vividas.c
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@@ -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;