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xfrm: fix possible derferencing in error path 

Fix derferencing pointer when xfrm_policy_lookup_bytype returns an
 error.

Fixes: 63b21caba1 ("xfrm: introduce forwarding of ICMP Error messages")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/kernel-janitors/f6ef0d0d-96de-4e01-9dc3-c1b3a6338653@moroto.mountain/
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Antony Antony 2024-04-10 19:27:12 +02:00 committed by Steffen Klassert
parent bccb798e07
commit 8b06a24bb6
1 changed files with 2 additions and 0 deletions
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2
net/xfrm/xfrm_policy.c
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@ -3593,6 +3593,8 @@ xfrm_policy *xfrm_in_fwd_icmp(struct sk_buff *skb,
return pol;
pol = xfrm_policy_lookup(net, &fl1, family, XFRM_POLICY_FWD, if_id);
if (IS_ERR(pol))
pol = NULL;
}
return pol;