PR #23836 opened by qaq03101 URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23836 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23836.patch
# Summary of changes\n\nReject SCD tracks with zero channels, which can cause a division by zero in \u0060scd_read_packet()\u0060.\n\nFixes #23181. >From 64734e415c09eaab82cc5ad2c9baf52af8513203 Mon Sep 17 00:00:00 2001 From: qaq03101 <[email protected]> Date: Fri, 17 Jul 2026 14:05:55 +0800 Subject: [PATCH] avformat/scd: reject zero-channel tracks A zero channel count can cause a division by zero in scd_read_packet(). Fixes #23181. --- libavformat/scd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/scd.c b/libavformat/scd.c index 091d20824c..6c0c41486d 100644 --- a/libavformat/scd.c +++ b/libavformat/scd.c @@ -182,7 +182,8 @@ static int scd_read_track(AVFormatContext *s, SCDTrackHeader *track, int index) track->aux_count = AV_RB32(buf + 28); /* Sanity checks */ - if (track->num_channels > 8 || track->sample_rate >= 192000 || + if (!track->num_channels || track->num_channels > 8 || + track->sample_rate >= 192000 || track->loop_start > track->loop_end) return AVERROR_INVALIDDATA; -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
