[FFmpeg-devel] [PATCH 6/7] avcodec/cbs_av1: Avoid shift overflow

From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 6/7] avcodec/cbs_av1: Avoid shift overflow
Date: Thu,  2 May 2024 02:41:49 +0200
Message-ID: <20240502004150.3627661-6-michael@niedermayer.cc> (raw)
In-Reply-To: <20240502004150.3627661-1-michael@niedermayer.cc>

Fixes: CID1465488 Unintentional integer overflow

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/cbs_av1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c
index 1d9ac5ab449..fb829960220 100644
--- a/libavcodec/cbs_av1.c
+++ b/libavcodec/cbs_av1.c
@@ -301,7 +301,7 @@ static int cbs_av1_write_increment(CodedBitstreamContext *ctx, PutBitContext *pb
         return AVERROR(ENOSPC);
 
     if (len > 0)
-        put_bits(pbc, len, (1 << len) - 1 - (value != range_max));
+        put_bits(pbc, len, (1U << len) - 1 - (value != range_max));
 
     CBS_TRACE_WRITE_END_NO_SUBSCRIPTS();
 
-- 
2.43.2

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