linux-kernel - [PATCH 4.13 16/43] ovl: add NULL check in ovl_alloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20171031095531.176386717@linuxfoundation.org>
Date:   Tue, 31 Oct 2017 10:55:36 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hirofumi Nakagawa <nklabs@...il.com>
Subject: [PATCH 4.13 16/43] ovl: add NULL check in ovl_alloc_inode

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hirofumi Nakagawa <nklabs@...il.com>

commit b3885bd6edb41b91a0e3976469f72ae31bfb8d95 upstream.

This was detected by fault injection test

Signed-off-by: Hirofumi Nakagawa <nklabs@...il.com>
Fixes: 13cf199d0088 ("ovl: allocate an ovl_inode struct")
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/overlayfs/super.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -174,6 +174,9 @@ static struct inode *ovl_alloc_inode(str
 {
 	struct ovl_inode *oi = kmem_cache_alloc(ovl_inode_cachep, GFP_KERNEL);
 
+	if (!oi)
+		return NULL;
+
 	oi->cache = NULL;
 	oi->redirect = NULL;
 	oi->version = 0;