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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-06-04 05:16:25 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-05 06:01:47 +0300 |
| commit | cda7ea6903502af34015000e16be290a79f07638 (patch) | |
| tree | 3463caf1a6ed4fdcc3f94ce6cba32b89b5be7cf0 | |
| parent | 89a5ea99662505d2d61f2a3030a6896c2cb3cdb0 (diff) | |
| download | linux-cda7ea6903502af34015000e16be290a79f07638.tar.xz | |
macsec: check return value of skb_to_sgvec always
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/macsec.c | 13 |
1 files 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 |