mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-28 00:49:37 -05:00
30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Sadaf Ebrahimi <sadafebrahimi@google.com>
|
||
|
|
Date: Thu, 2 Jun 2022 19:32:22 +0000
|
||
|
|
Subject: [PATCH] Prevent XML_GetBuffer signed integer overflow
|
||
|
|
|
||
|
|
Bug: http://b/221255869
|
||
|
|
Change-Id: I38758fae8c71184f728f95e6073457cdb86bcc29
|
||
|
|
(cherry picked from commit d6a09f1b7fb24dd03dc58e45062ad951a37ff8e3)
|
||
|
|
Merged-In: I38758fae8c71184f728f95e6073457cdb86bcc29
|
||
|
|
---
|
||
|
|
lib/xmlparse.c | 5 +++++
|
||
|
|
1 file changed, 5 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/lib/xmlparse.c b/lib/xmlparse.c
|
||
|
|
index 2f4e7258..91f50034 100644
|
||
|
|
--- a/lib/xmlparse.c
|
||
|
|
+++ b/lib/xmlparse.c
|
||
|
|
@@ -1741,6 +1741,11 @@ XML_GetBuffer(XML_Parser parser, int len)
|
||
|
|
keep = (int)(bufferPtr - buffer);
|
||
|
|
if (keep > XML_CONTEXT_BYTES)
|
||
|
|
keep = XML_CONTEXT_BYTES;
|
||
|
|
+ /* Detect and prevent integer overflow */
|
||
|
|
+ if (keep > INT_MAX - neededSize) {
|
||
|
|
+ parser->m_errorCode = XML_ERROR_NO_MEMORY;
|
||
|
|
+ return NULL;
|
||
|
|
+ }
|
||
|
|
neededSize += keep;
|
||
|
|
#endif /* defined XML_CONTEXT_BYTES */
|
||
|
|
if (neededSize <= bufferLim - buffer) {
|