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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-02 14:22:48 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-03 19:36:26 +0200 |
| commit | 9fec43a92d7304fc594dcf73c6dd3144b855617d (patch) | |
| tree | 69162bb5bb65460abb9c7858e1570f411f4c989e | |
| parent | cd847f86d31f87f0f7733ca6ab7a2c022a1398bd (diff) | |
avcodec/alsdec: No channels cannot be accessed
Fixes: out of array access
Fixes: 48145/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5054524173189120
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/alsdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index bf961a03f5..7031fa0acb 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -361,6 +361,9 @@ static av_cold int read_specific_config(ALSDecContext *ctx) return AVERROR_PATCHWELCOME; } + if (avctx->ch_layout.nb_channels == 0) + return AVERROR_INVALIDDATA; + ctx->cur_frame_length = sconf->frame_length; // read channel config |