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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-06-04 04:16:23 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-04 23:01:47 -0400 |
| commit | 3f29770723fe498a5c5f57c3a31a996ebdde03e1 (patch) | |
| tree | d93c21ae11e1ca396088bc931fc9a479b9a1b211 /net/ipv6 | |
| parent | 48a1df65334b74bd7531f932cca5928932abf769 (diff) | |
| download | op-kernel-dev-3f29770723fe498a5c5f57c3a31a996ebdde03e1.zip op-kernel-dev-3f29770723fe498a5c5f57c3a31a996ebdde03e1.tar.gz | |
ipsec: check return value of skb_to_sgvec always
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/ah6.c | 8 | ||||
| -rw-r--r-- | net/ipv6/esp6.c | 20 |
2 files changed, 19 insertions, 9 deletions
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index dda6035..755f382 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -423,7 +423,9 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb) ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low); sg_init_table(sg, nfrags + sglists); - skb_to_sgvec_nomark(skb, sg, 0, skb->len); + err = skb_to_sgvec_nomark(skb, sg, 0, skb->len); + if (unlikely(err < 0)) + goto out_free; if (x->props.flags & XFRM_STATE_ESN) { /* Attach seqhi sg right after packet payload */ @@ -606,7 +608,9 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb) ip6h->hop_limit = 0; sg_init_table(sg, nfrags + sglists); - skb_to_sgvec_nomark(skb, sg, 0, skb->len); + err = skb_to_sgvec_nomark(skb, sg, 0, skb->len); + if (unlikely(err < 0)) + goto out_free; if (x->props.flags & XFRM_STATE_ESN) { /* Attach seqhi sg right after packet payload */ diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index 1fe99ba..2ede4e4 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -346,9 +346,11 @@ int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info esph = esp_output_set_esn(skb, x, ip_esp_hdr(skb), seqhi); sg_init_table(sg, esp->nfrags); - skb_to_sgvec(skb, sg, - (unsigned char *)esph - skb->data, - assoclen + ivlen + esp->clen + alen); + err = skb_to_sgvec(skb, sg, + (unsigned char *)esph - skb->data, + assoclen + ivlen + esp->clen + alen); + if (unlikely(err < 0)) + goto error; if (!esp->inplace) { int allocsize; @@ -372,9 +374,11 @@ int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info spin_unlock_bh(&x->lock); sg_init_table(dsg, skb_shinfo(skb)->nr_frags + 1); - skb_to_sgvec(skb, dsg, - (unsigned char *)esph - skb->data, - assoclen + ivlen + esp->clen + alen); + err = skb_to_sgvec(skb, dsg, + (unsigned char *)esph - skb->data, + assoclen + ivlen + esp->clen + alen); + if (unlikely(err < 0)) + goto error; } if ((x->props.flags & XFRM_STATE_ESN)) @@ -618,7 +622,9 @@ skip_cow: esp_input_set_header(skb, seqhi); sg_init_table(sg, nfrags); - skb_to_sgvec(skb, sg, 0, skb->len); + ret = skb_to_sgvec(skb, sg, 0, skb->len); + if (unlikely(ret < 0)) + goto out; skb->ip_summed = CHECKSUM_NONE; |
