This is a note to let you know that I've just added the patch titled
fs: NULL dereference in posix_acl_to_xattr()
to the 3.14-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:
fs-null-dereference-in-posix_acl_to_xattr.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 47ba9734403770a4c5e685b01f0a72b835dd4fff Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Fri, 14 Feb 2014 12:05:49 +0300
Subject: fs: NULL dereference in posix_acl_to_xattr()
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 47ba9734403770a4c5e685b01f0a72b835dd4fff upstream.
This patch moves the dereference of "buffer" after the check for NULL.
The only place which passes a NULL parameter is gfs2_set_acl().
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Steven Whitehouse <swhiteho@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/posix_acl.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -723,7 +723,7 @@ posix_acl_to_xattr(struct user_namespace
void *buffer, size_t size)
{
posix_acl_xattr_header *ext_acl = (posix_acl_xattr_header *)buffer;
- posix_acl_xattr_entry *ext_entry = ext_acl->a_entries;
+ posix_acl_xattr_entry *ext_entry;
int real_size, n;
real_size = posix_acl_xattr_size(acl->a_count);
@@ -731,7 +731,8 @@ posix_acl_to_xattr(struct user_namespace
return real_size;
if (real_size > size)
return -ERANGE;
-
+
+ ext_entry = ext_acl->a_entries;
ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
for (n=0; n < acl->a_count; n++, ext_entry++) {
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-3.14/fs-null-dereference-in-posix_acl_to_xattr.patch
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