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

macsec: check return value of skb_to_sgvec always

to the 4.9-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: macsec-check-return-value-of-skb_to_sgvec-always.patch and it can be found in the queue-4.9 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 Mon Apr 9 17:09:24 CEST 2018

From: "Jason A. Donenfeld" Jason@zx2c4.com Date: Sun, 4 Jun 2017 04:16:25 +0200 Subject: macsec: check return value of skb_to_sgvec always

From: "Jason A. Donenfeld" Jason@zx2c4.com

[ Upstream commit cda7ea6903502af34015000e16be290a79f07638 ]

Signed-off-by: Jason A. Donenfeld Jason@zx2c4.com Cc: Sabrina Dubroca sd@queasysnail.net Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/macsec.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)

--- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -742,7 +742,12 @@ static struct sk_buff *macsec_encrypt(st macsec_fill_iv(iv, secy->sci, pn);

sg_init_table(sg, ret); - skb_to_sgvec(skb, sg, 0, skb->len); + ret = skb_to_sgvec(skb, sg, 0, skb->len); + if (unlikely(ret < 0)) { + macsec_txsa_put(tx_sa); + kfree_skb(skb); + return ERR_PTR(ret); + }

if (tx_sc->encrypt) { int len = skb->len - macsec_hdr_len(sci_present) - @@ -949,7 +954,11 @@ static struct sk_buff *macsec_decrypt(st macsec_fill_iv(iv, sci, ntohl(hdr->packet_number));

sg_init_table(sg, ret); - skb_to_sgvec(skb, sg, 0, skb->len); + ret = skb_to_sgvec(skb, sg, 0, skb->len); + if (unlikely(ret < 0)) { + kfree_skb(skb); + return ERR_PTR(ret); + }

if (hdr->tci_an & MACSEC_TCI_E) { /* confidentiality: ethernet + macsec header

Patches currently in stable-queue which might be from Jason@zx2c4.com are

queue-4.9/ipsec-check-return-value-of-skb_to_sgvec-always.patch queue-4.9/skbuff-return-emsgsize-in-skb_to_sgvec-to-prevent-overflow.patch queue-4.9/macsec-check-return-value-of-skb_to_sgvec-always.patch