From 051d11f659455f38be7ce40e2dc9d03b082dcd4d Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 20 Feb 2020 22:26:18 +0100 Subject: [PATCH] avcodec/pcm: Fix invalid shift in AV_CODEC_ID_PCM_LXF Fixes: left shift of 233 by 24 places cannot be represented in type 'int' Fixes: 20736/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PCM_LXF_fuzzer-4829212685107200 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol Signed-off-by: Michael Niedermayer --- libavcodec/pcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/pcm.c b/libavcodec/pcm.c index 6346510de0..96a68f7fe8 100644 --- a/libavcodec/pcm.c +++ b/libavcodec/pcm.c @@ -513,7 +513,7 @@ static int pcm_decode_frame(AVCodecContext *avctx, void *data, ((src[2] & 0x0F) << 8) | src[1]; // extract high 20 bits and expand to 32 bits - *dst_int32_t++ = (src[4] << 24) | + *dst_int32_t++ = ((uint32_t)src[4]<<24) | (src[3] << 16) | ((src[2] & 0xF0) << 8) | (src[4] << 4) |