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From 799eb6a3af8a3dd81e2429bf11a72a57e541f908 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Sun, 17 Mar 2019 12:37:21 -0400
Subject: [PATCH] Address SF bug #119: MemorySanitizer: FPE on unknown address
---
dgif_lib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Upstream-status: Backport [https://sourceforge.net/p/giflib/code/ci/799eb6a3af8a3dd81e2429bf11a72a57e541f908/]
CVE: CVE-2019-15133
--- a/lib/dgif_lib.c 2021-01-13 19:28:18.923493586 +0100
+++ b/lib/dgif_lib.c 2021-01-13 19:28:55.245863085 +0100
@@ -1099,7 +1099,7 @@ DGifSlurp(GifFileType *GifFile)
sp = &GifFile->SavedImages[GifFile->ImageCount - 1];
/* Allocate memory for the image */
- if (sp->ImageDesc.Width < 0 && sp->ImageDesc.Height < 0 &&
+ if (sp->ImageDesc.Width <= 0 && sp->ImageDesc.Height <= 0 &&
sp->ImageDesc.Width > (INT_MAX / sp->ImageDesc.Height)) {
return GIF_ERROR;
}
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