From 69dcd123f19acf851f85166159a3719565813fd0 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Fri, 5 Jul 2024 02:21:43 +0200
Subject: [PATCH] avcodec/cri: Check length

Fixes: CID1604394 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/cri.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/cri.c b/libavcodec/cri.c
index 7b9a350967..6932bb6745 100644
--- a/libavcodec/cri.c
+++ b/libavcodec/cri.c
@@ -234,10 +234,14 @@ static int cri_decode_frame(AVCodecContext *avctx, AVFrame *p,
             s->data_size = length;
             goto skip;
         case 105:
+            if (length <= 0)
+                return AVERROR_INVALIDDATA;
             hflip = bytestream2_get_byte(gb) != 0;
             length--;
             goto skip;
         case 106:
+            if (length <= 0)
+                return AVERROR_INVALIDDATA;
             vflip = bytestream2_get_byte(gb) != 0;
             length--;
             goto skip;