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ipq807x: fix a null pointer crash in ip_tunnel

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Fixes: WIFI-7571
Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin
2022-05-26 09:51:07 +02:00
parent 7d5eab4bf3
commit 8ef9989147
1 changed files with 13 additions and 0 deletions
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13
feeds/ipq807x/ipq807x/patches/102-fix-null-pointer-dereference-in-iptunnel_xmit.patch Normal file
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@@ -0,0 +1,13 @@
Index: linux-5.4.164-qsdk-d5fcb18e5420670c8734c6a659873e73adab6dac/net/ipv4/ip_tunnel_core.c
===================================================================
--- linux-5.4.164-qsdk-d5fcb18e5420670c8734c6a659873e73adab6dac.orig/net/ipv4/ip_tunnel_core.c
+++ linux-5.4.164-qsdk-d5fcb18e5420670c8734c6a659873e73adab6dac/net/ipv4/ip_tunnel_core.c
@@ -86,7 +86,7 @@ void iptunnel_xmit(struct sock *sk, stru
in_dev = __dev_get_by_index(&init_net, skb_iif);
}
- if (proto == IPPROTO_IPV6 || proto == IPPROTO_GRE || netif_is_vxlan(in_dev)) {
+ if (proto == IPPROTO_IPV6 || proto == IPPROTO_GRE || (in_dev && netif_is_vxlan(in_dev))) {
skb->skb_iif = skb_iif;
}