PR #21268 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21268 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21268.patch
Fixes: division by 0 Fixes: 457634826/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_PSXC_DEC_fuzzer-4903668521697280 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> >From e965801a0e13f16829be67708618c145748ff5b8 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <[email protected]> Date: Mon, 22 Dec 2025 18:30:52 +0100 Subject: [PATCH] avcodec/adpcm: check block_align for PSXC Fixes: division by 0 Fixes: 457634826/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_PSXC_DEC_fuzzer-4903668521697280 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/adpcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index 72fbb841a4..3da0791ba3 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -294,7 +294,7 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx) break; case AV_CODEC_ID_ADPCM_PSXC: max_channels = 8; - if (avctx->ch_layout.nb_channels <= 0) + if (avctx->ch_layout.nb_channels <= 0 || avctx->block_align <= 0) return AVERROR_INVALIDDATA; break; case AV_CODEC_ID_ADPCM_IMA_DAT4: -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
