Patch "ima: fix memory leak in ima_release_policy" has been added to the 4.9-stable tree

Patch "ima: fix memory leak in ima_release_policy" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ima: fix memory leak in ima_release_policy

to the 4.9-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:
     ima-fix-memory-leak-in-ima_release_policy.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 9a11a18902bc3b904353063763d06480620245a6 Mon Sep 17 00:00:00 2001
From: Eric Richter <erichte@linux.vnet.ibm.com>
Date: Thu, 13 Oct 2016 17:47:36 -0500
Subject: ima: fix memory leak in ima_release_policy

From: Eric Richter <erichte@linux.vnet.ibm.com>

commit 9a11a18902bc3b904353063763d06480620245a6 upstream.

When the "policy" securityfs file is opened for read, it is opened as a
sequential file. However, when it is eventually released, there is no
cleanup for the sequential file, therefore some memory is leaked.

This patch adds a call to seq_release() in ima_release_policy() to clean up
the memory when the file is opened for read.

Fixes: 80eae209d63a IMA: allow reading back the current policy
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Eric Richter <erichte@linux.vnet.ibm.com>
Tested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 security/integrity/ima/ima_fs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/integrity/ima/ima_fs.c
+++ b/security/integrity/ima/ima_fs.c
@@ -401,7 +401,7 @@ static int ima_release_policy(struct ino
 	const char *cause = valid_policy ? "completed" : "failed";
 
 	if ((file->f_flags & O_ACCMODE) == O_RDONLY)
-		return 0;
+		return seq_release(inode, file);
 
 	if (valid_policy && ima_check_policy() < 0) {
 		cause = "failed";


Patches currently in stable-queue which might be from erichte@linux.vnet.ibm.com are

queue-4.9/ima-fix-memory-leak-in-ima_release_policy.patch