This is a note to let you know that I've just added the patch titled
dm ioctl: do not leak argv if target message only contains whitespace
to the 3.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dm-ioctl-do-not-leak-argv-if-target-message-only-contains-whitespace.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 902c6a96a7cb9c50d2a8aed1788efad0a5d8f04c Mon Sep 17 00:00:00 2001
From: Jesper Juhl <[email protected]>
Date: Wed, 7 Mar 2012 19:09:34 +0000
Subject: dm ioctl: do not leak argv if target message only contains whitespace
From: Jesper Juhl <[email protected]>
commit 902c6a96a7cb9c50d2a8aed1788efad0a5d8f04c upstream.
If 'argc' is zero we jump to the 'out:' label, but this leaks the
(unused) memory that 'dm_split_args()' allocated for 'argv' if the
string being split consisted entirely of whitespace. Jump to the
'out_argv:' label instead to free up that memory.
Signed-off-by: Jesper Juhl <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/md/dm-ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1437,7 +1437,7 @@ static int target_message(struct dm_ioct
if (!argc) {
DMWARN("Empty message received.");
- goto out;
+ goto out_argv;
}
table = dm_get_live_table(md);
Patches currently in stable-queue which might be from [email protected] are
queue-3.2/dm-ioctl-do-not-leak-argv-if-target-message-only-contains-whitespace.patch
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