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netdevsim: fix sa_idx out of bounds check

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Currently if sa_idx is equal to NSIM_IPSEC_MAX_SA_COUNT then
an out-of-bounds read on ipsec->sa will occur. Fix the
incorrect bounds check by using >= rather than >.

Detected by CoverityScan, CID#1470226 ("Out-of-bounds-read")

Fixes: 7699353da8 ("netdevsim: add ipsec offload testing")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Colin Ian King 2018-06-30 21:39:24 +01:00 committed by David S. Miller
parent 97680ade43
commit c02462d8a3
1 changed files with 1 additions and 1 deletions
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2
drivers/net/netdevsim/ipsec.c
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@ -249,7 +249,7 @@ bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb)
}
sa_idx = xs->xso.offload_handle & ~NSIM_IPSEC_VALID;
if (unlikely(sa_idx > NSIM_IPSEC_MAX_SA_COUNT)) {
if (unlikely(sa_idx >= NSIM_IPSEC_MAX_SA_COUNT)) {
netdev_err(ns->netdev, "bad sa_idx=%d max=%d\n",
sa_idx, NSIM_IPSEC_MAX_SA_COUNT);
return false;