diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-06-30 00:00:32 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-02 19:22:36 +0200 |
| commit | 8154cb7c2ff2afcb1a0842de8c215b7714c814d0 (patch) | |
| tree | 97007716cb8c6134be4e3e31f0fae3239f14080c /libavutil | |
| parent | c6f1e48b86471b1cc91c468e78a065075ed409bd (diff) | |
avutil/channel_layout: av_channel_layout_describe_bprint: Check for buffer end
Fixes: Timeout printing a billion channels
Fixes: 48099/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-6754782204788736
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/channel_layout.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavutil/channel_layout.c b/libavutil/channel_layout.c index 21b70173b7..1887987789 100644 --- a/libavutil/channel_layout.c +++ b/libavutil/channel_layout.c @@ -757,6 +757,10 @@ int av_channel_layout_describe_bprint(const AVChannelLayout *channel_layout, if (channel_layout->order == AV_CHANNEL_ORDER_CUSTOM && channel_layout->u.map[i].name[0]) av_bprintf(bp, "@%s", channel_layout->u.map[i].name); + + if (!av_bprint_is_complete(bp)) + return AVERROR(ENOMEM); + } if (channel_layout->nb_channels) { av_bprintf(bp, ")"); |