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authorMiklos Szeredi <mszeredi@suse.cz>2012-08-15 12:55:22 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-14 10:00:38 -0700
commit56e4562bb32d8a47485a9b8b868cb28fda595170 (patch)
tree2ced5a9c38f85bb28060192933907b0cb47ac010 /kernel
parent002d4127ed4f52323b0dc6573df907a5c2c7cef0 (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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/audit_tree.c6
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;
}