Commit f7450bc6 authored Apr 03, 2019 by Casey Schaufler

Smack: Fix IPv6 handling of 0 secmark



Handle the case where the skb for an IPv6 packet contains
a 0 in the secmark for a packet generated locally. This
can only happen for system packets, so allow the access.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>

parent 4e328b08

security/smack/smack_lsm.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3907,6 +3907,8 @@ access_check:
		#ifdef SMACK_IPV6_SECMARK_LABELING
		if (skb && skb->secmark != 0)
		skp = smack_from_secid(skb->secmark);
		else if (smk_ipv6_localhost(&sadd))
		break;
		else
		skp = smack_ipv6host_label(&sadd);
		if (skp == NULL)

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