From 18f26f8a2f8dc3b9ec3ac3ab8e03fce15cc8c88d Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 17 Feb 2024 01:04:13 +0100
Subject: [PATCH] swscale/utils: Allocate more dithererror
Fixes: out of array read
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libswscale/utils.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libswscale/utils.c b/libswscale/utils.c
index ec822ff5d9..4dc0fbfefb 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -1885,7 +1885,7 @@ static av_cold int sws_init_single_context(SwsContext *c, SwsFilter *srcFilter,
}
for (i = 0; i < 4; i++)
- if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], c->dstW + 2))
+ if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], c->dstW + 3))
goto nomem;
c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) ? 1 : 0;