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The following commit(s) were added to refs/heads/master by this push:
new 8ac6325143 avcodec/adpcm: check block_align for PSXC
8ac6325143 is described below
commit 8ac6325143958373bd415b75e44d56d62d2cc802
Author: Michael Niedermayer <[email protected]>
AuthorDate: Mon Dec 22 18:30:52 2025 +0100
Commit: James Almer <[email protected]>
CommitDate: Wed Dec 24 02:51:20 2025 +0000
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:
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