[PATCH net-next v10 4/5] macsec: check return value of skb_to_sgvec always
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STALE3427d
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: 2017-06-04 02:16:58
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lkml
Subsystem:
networking drivers, networking [macsec], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Sabrina Dubroca, Linus Torvalds
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Cc: Sabrina Dubroca <sd@queasysnail.net> --- 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 91642fd87cd1..b79513b8322f 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c@@ -740,7 +740,12 @@ static struct sk_buff *macsec_encrypt(struct sk_buff *skb, 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) -
@@ -947,7 +952,11 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb, 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
--
2.13.0