From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
David.Laight@aculab.com, kernel-hardening@lists.openwall.com,
davem@davemloft.net
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: [PATCH v5 4/5] macsec: check return value of skb_to_sgvec always
Date: Tue, 25 Apr 2017 17:52:14 +0200 [thread overview]
Message-ID: <20170425155215.4835-4-Jason@zx2c4.com> (raw)
In-Reply-To: <20170425155215.4835-1-Jason@zx2c4.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
drivers/net/macsec.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index dbab05afcdbe..d846f42b99ec 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -733,7 +733,12 @@ static struct sk_buff *macsec_encrypt(struct sk_buff *skb,
macsec_fill_iv(iv, secy->sci, pn);
sg_init_table(sg, MAX_SKB_FRAGS + 1);
- 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) -
@@ -937,7 +942,11 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb,
macsec_fill_iv(iv, sci, ntohl(hdr->packet_number));
sg_init_table(sg, MAX_SKB_FRAGS + 1);
- 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
--
2.12.2
next prev parent reply other threads:[~2017-04-25 15:53 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-25 14:08 [PATCH 1/5] skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow Jason A. Donenfeld
2017-04-25 14:08 ` [PATCH 2/5] ipsec: check return value of skb_to_sgvec always Jason A. Donenfeld
2017-04-25 14:08 ` [PATCH 3/5] rxrpc: " Jason A. Donenfeld
2017-04-25 14:08 ` [PATCH 4/5] macsec: " Jason A. Donenfeld
2017-04-25 14:08 ` [PATCH 5/5] virtio_net: " Jason A. Donenfeld
2017-04-25 14:16 ` [PATCH v2 1/5] skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow Jason A. Donenfeld
2017-04-25 14:21 ` [PATCH v3 " Jason A. Donenfeld
2017-04-25 14:47 ` [PATCH " David Miller
2017-04-25 15:04 ` [PATCH v4 " Jason A. Donenfeld
2017-04-25 15:17 ` David Miller
2017-04-25 15:52 ` [PATCH v5 " Jason A. Donenfeld
2017-04-25 15:52 ` [PATCH v5 2/5] ipsec: check return value of skb_to_sgvec always Jason A. Donenfeld
2017-04-25 15:52 ` [PATCH v5 3/5] rxrpc: " Jason A. Donenfeld
2017-04-25 15:52 ` Jason A. Donenfeld [this message]
2017-04-25 15:52 ` [PATCH v5 5/5] virtio_net: " Jason A. Donenfeld
2017-04-25 18:47 ` [PATCH v6 1/5] skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow Jason A. Donenfeld
2017-04-25 18:47 ` [PATCH v6 2/5] ipsec: check return value of skb_to_sgvec always Jason A. Donenfeld
2017-04-25 18:47 ` [PATCH v6 3/5] rxrpc: " Jason A. Donenfeld
2017-04-28 11:41 ` Sabrina Dubroca
2017-04-28 13:29 ` Jason A. Donenfeld
2017-04-25 18:47 ` [PATCH v6 4/5] macsec: " Jason A. Donenfeld
2017-04-25 18:47 ` [PATCH v6 5/5] virtio_net: " Jason A. Donenfeld
2017-04-27 9:21 ` [PATCH v6 1/5] skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow Jason A. Donenfeld
2017-04-27 11:30 ` Sabrina Dubroca
2017-04-27 12:04 ` Jason A. Donenfeld
2017-04-27 14:54 ` David Laight
2017-04-27 15:54 ` David Miller
2017-04-28 16:18 ` Sabrina Dubroca
2017-04-28 22:47 ` Jason A. Donenfeld
2017-04-25 15:42 ` [PATCH " Sergei Shtylyov
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