diff options
| author | Miklos Szeredi <mszeredi@suse.cz> | 2012-08-15 12:55:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-14 10:00:38 -0700 |
| commit | 56e4562bb32d8a47485a9b8b868cb28fda595170 (patch) | |
| tree | 2ced5a9c38f85bb28060192933907b0cb47ac010 | |
| parent | 002d4127ed4f52323b0dc6573df907a5c2c7cef0 (diff) | |
audit: don't free_chunk() after fsnotify_add_mark()
commit 0fe33aae0e94b4097dd433c9399e16e17d638cd8 upstream.
Don't do free_chunk() after fsnotify_add_mark(). That one does a delayed unref
via the destroy list and this results in use-after-free.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | kernel/audit_tree.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index e99dda04b126..0cf6a0a51a12 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c @@ -265,7 +265,7 @@ static void untag_chunk(struct node *p) fsnotify_duplicate_mark(&new->mark, entry); if (fsnotify_add_mark(&new->mark, new->mark.group, new->mark.i.inode, NULL, 1)) { - free_chunk(new); + fsnotify_put_mark(&new->mark); goto Fallback; } @@ -328,7 +328,7 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree) entry = &chunk->mark; if (fsnotify_add_mark(entry, audit_tree_group, inode, NULL, 0)) { - free_chunk(chunk); + fsnotify_put_mark(entry); return -ENOSPC; } @@ -402,7 +402,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree) fsnotify_duplicate_mark(chunk_entry, old_entry); if (fsnotify_add_mark(chunk_entry, chunk_entry->group, chunk_entry->i.inode, NULL, 1)) { spin_unlock(&old_entry->lock); - free_chunk(chunk); + fsnotify_put_mark(chunk_entry); fsnotify_put_mark(old_entry); return -ENOSPC; } |