linux-kernel - [PATCH] staging: speakup: i18n.c: Fix leak in msg

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Date:	Tue, 7 Aug 2012 21:44:54 +0200 (CEST)
From:	Jesper Juhl <jj@...osbits.net>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
cc:	William Hubbs <w.d.hubbs@...il.com>,
	Chris Brannon <chris@...-brannons.com>,
	Kirk Reiser <kirk@...ille.uwo.ca>,
	Samuel Thibault <samuel.thibault@...-lyon.org>,
	"Justin P. Mattock" <justinmattock@...il.com>,
	speakup@...ille.uwo.ca, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] staging: speakup: i18n.c: Fix leak in msg_set()

If we end up returning -EINVAL from the function we will leak the
memory allocated to 'newstr' which has been allocated but not yet
assigned to anything.
Fix the leak by properly freeing the memory again before we return.

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 drivers/staging/speakup/i18n.c | 1 +
 1 file changed, 1 insertion(+)

 Compile tested only.

diff --git a/drivers/staging/speakup/i18n.c b/drivers/staging/speakup/i18n.c
index ca01734..7c1658b 100644
--- a/drivers/staging/speakup/i18n.c
+++ b/drivers/staging/speakup/i18n.c
@@ -555,6 +555,7 @@ ssize_t msg_set(enum msg_index_t index, char *text, size_t length)
 			&& index <= MSG_FORMATTED_END)
 				&& !fmt_validate(speakup_default_msgs[index],
 				newstr)) {
+				kfree(newstr);
 				return -EINVAL;
 			}
 			spk_lock(flags);
-- 
1.7.11.4


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
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