From b7d063951d774db5833b7d65162a11dde8bcaeaf Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 18 Dec 2022 17:04:27 +0100 Subject: [PATCH] avcodec/apac: Sanity check bits_per_coded_sample Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int' Fixes: 53931/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APAC_fuzzer-6072913738727424 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/apac.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavcodec/apac.c b/libavcodec/apac.c index 030f81adce..3408f75292 100644 --- a/libavcodec/apac.c +++ b/libavcodec/apac.c @@ -75,7 +75,10 @@ static av_cold int apac_init(AVCodecContext *avctx) avctx->sample_fmt = AV_SAMPLE_FMT_U8P; if (avctx->ch_layout.nb_channels < 1 || - avctx->ch_layout.nb_channels > 2) + avctx->ch_layout.nb_channels > 2 || + avctx->bits_per_coded_sample < 8 || + avctx->bits_per_coded_sample > 16 + ) return AVERROR_INVALIDDATA; for (int ch = 0; ch < avctx->ch_layout.nb_channels; ch++) {