mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-15 02:44:23 -05:00
ff249a4799
Signed-off-by: Tavi <tavi@divested.dev>
31 lines
1015 B
Diff
31 lines
1015 B
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Sebastian Pipping <sebastian@pipping.org>
|
|
Date: Mon, 19 Aug 2024 22:37:16 +0200
|
|
Subject: [PATCH] lib: Detect integer overflow in function nextScaffoldPart
|
|
|
|
Reported by TaiYou
|
|
---
|
|
lib/xmlparse.c | 9 +++++++++
|
|
1 file changed, 9 insertions(+)
|
|
|
|
diff --git a/lib/xmlparse.c b/lib/xmlparse.c
|
|
index 9bd93b0..e6f334a 100644
|
|
--- a/lib/xmlparse.c
|
|
+++ b/lib/xmlparse.c
|
|
@@ -6929,6 +6929,15 @@ nextScaffoldPart(XML_Parser parser) {
|
|
int next;
|
|
|
|
if (! dtd->scaffIndex) {
|
|
+ /* Detect and prevent integer overflow.
|
|
+ * The preprocessor guard addresses the "always false" warning
|
|
+ * from -Wtype-limits on platforms where
|
|
+ * sizeof(unsigned int) < sizeof(size_t), e.g. on x86_64. */
|
|
+#if UINT_MAX >= SIZE_MAX
|
|
+ if (parser->m_groupSize > ((size_t)(-1) / sizeof(int))) {
|
|
+ return -1;
|
|
+ }
|
|
+#endif
|
|
dtd->scaffIndex = (int *)MALLOC(parser, parser->m_groupSize * sizeof(int));
|
|
if (! dtd->scaffIndex)
|
|
return -1;
|