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authorJason A. Donenfeld <Jason@zx2c4.com>2017-06-04 04:16:23 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-04 23:01:47 -0400
commit3f29770723fe498a5c5f57c3a31a996ebdde03e1 (patch)
treed93c21ae11e1ca396088bc931fc9a479b9a1b211 /net/ipv4/esp4.c
parent48a1df65334b74bd7531f932cca5928932abf769 (diff)
downloadop-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/ipv4/esp4.c')
-rw-r--r--net/ipv4/esp4.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 93322f8..d815d17 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -377,9 +377,11 @@ int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
esp->esph = esph;
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;
@@ -403,9 +405,11 @@ int esp_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))
@@ -690,7 +694,9 @@ skip_cow:
esp_input_set_header(skb, seqhi);
sg_init_table(sg, nfrags);
- skb_to_sgvec(skb, sg, 0, skb->len);
+ err = skb_to_sgvec(skb, sg, 0, skb->len);
+ if (unlikely(err < 0))
+ goto out;
skb->ip_summed = CHECKSUM_NONE;
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