From 5afb8a3f96573f7ea018abb768f5b6ebe1a6c1a4 Mon Sep 17 00:00:00 2001
From: Xi Wang <xi.wang@gmail.com>
Date: Tue, 20 Dec 2011 18:39:41 -0500
Subject: [PATCH] audit: fix signedness bug in audit_log_execve_info()
In the loop, a size_t "len" is used to hold the return value of
audit_log_single_execve_arg(), which returns -1 on error. In that
case the error handling (len <= 0) will be bypassed since "len" is
unsigned, and the loop continues with (p += len) being wrapped.
Change the type of "len" to signed int to fix the error handling.
size_t len;
...
for (...) {
len = audit_log_single_execve_arg(...);
if (len <= 0)
break;
p += len;
}
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
---
kernel/auditsc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 593237e3654d4..86584ecb1039e 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1362,8 +1362,8 @@ static void audit_log_execve_info(struct audit_context *context,
struct audit_buffer **ab,
struct audit_aux_data_execve *axi)
{
- int i;
- size_t len, len_sent = 0;
+ int i, len;
+ size_t len_sent = 0;
const char __user *p;
char *buf;
--
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