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

HSI: ssi_protocol: double free in ssip_pn_xmit()

to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: hsi-ssi_protocol-double-free-in-ssip_pn_xmit.patch and it can be found in the queue-3.18 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 foo@baz Thu Mar 22 15:16:04 CET 2018

From: Dan Carpenter dan.carpenter@oracle.com Date: Fri, 21 Apr 2017 13:39:09 +0300 Subject: HSI: ssi_protocol: double free in ssip_pn_xmit()

From: Dan Carpenter dan.carpenter@oracle.com

[ Upstream commit 3026050179a3a9a6f5c892c414b5e36ecf092081 ]

If skb_pad() fails then it frees skb and we don't need to free it again at the end of the function.

Fixes: dc7bf5d7 ("HSI: Introduce driver for SSI Protocol") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Sebastian Reichel sre@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hsi/clients/ssi_protocol.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/hsi/clients/ssi_protocol.c +++ b/drivers/hsi/clients/ssi_protocol.c @@ -976,7 +976,7 @@ static int ssip_pn_xmit(struct sk_buff * goto drop; /* Pad to 32-bits - FIXME: Revisit*/ if ((skb->len & 3) && skb_pad(skb, 4 - (skb->len & 3))) - goto drop; + goto inc_dropped;

/* * Modem sends Phonet messages over SSI with its own endianess... @@ -1028,8 +1028,9 @@ static int ssip_pn_xmit(struct sk_buff * drop2: hsi_free_msg(msg); drop: - dev->stats.tx_dropped++; dev_kfree_skb(skb); +inc_dropped: + dev->stats.tx_dropped++;

return 0; }

Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-3.18/mmc-host-omap_hsmmc-checking-for-null-instead-of-is_err.patch queue-3.18/hsi-ssi_protocol-double-free-in-ssip_pn_xmit.patch queue-3.18/cifs-small-underflow-in-cnvrtdosunixtm.patch