From: Andrew Tridgell <andrew@tridgell.net>
Date: Wed, 13 Nov 2024 22:57:08 +0000 (+1100)
Subject: prevent information leak off the stack
X-Git-Tag: v3.4.0~14
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=589b0691e59f761ccb05ddb8e1124991440db2c7;p=thirdparty%2Frsync.git

prevent information leak off the stack

prevent leak of uninitialised stack data in hash_search
---

diff --git a/match.c b/match.c
index 36e78ed2..dfd6af2c 100644
--- a/match.c
+++ b/match.c
@@ -147,6 +147,9 @@ static void hash_search(int f,struct sum_struct *s,
 	int more;
 	schar *map;
 
+	// prevent possible memory leaks
+	memset(sum2, 0, sizeof sum2);
+
 	/* want_i is used to encourage adjacent matches, allowing the RLL
 	 * coding of the output to work more efficiently. */
 	want_i = 0;