[][Add macsec HW offload backport from kernel 5.18]
[Description]
Add macsec HW offload backport from kernel 5.18.
[Release-log]
N/A
Change-Id: I5b143fe620ec4bcae4075d1d85db5e41c8d48717
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5981730
diff --git a/target/linux/mediatek/patches-5.4/999-1775-v5.18-net-macsec-fix-NULL-dereference-in-macsec_upd_offload.patch b/target/linux/mediatek/patches-5.4/999-1775-v5.18-net-macsec-fix-NULL-dereference-in-macsec_upd_offload.patch
new file mode 100644
index 0000000..b885c0f
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/999-1775-v5.18-net-macsec-fix-NULL-dereference-in-macsec_upd_offload.patch
@@ -0,0 +1,35 @@
+From aa81700cf2326e288c9ca1fe7b544039617f1fc2 Mon Sep 17 00:00:00 2001
+From: Davide Caratti <dcaratti@redhat.com>
+Date: Mon, 6 Apr 2020 11:38:29 +0200
+Subject: macsec: fix NULL dereference in macsec_upd_offload()
+
+macsec_upd_offload() gets the value of MACSEC_OFFLOAD_ATTR_TYPE
+without checking its presence in the request message, and this causes
+a NULL dereference. Fix it rejecting any configuration that does not
+include this attribute.
+
+Reported-and-tested-by: syzbot+7022ab7c383875c17eff@syzkaller.appspotmail.com
+Fixes: dcb780fb2795 ("net: macsec: add nla support for changing the offloading selection")
+Signed-off-by: Davide Caratti <dcaratti@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/macsec.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
+index da82d7f16a09d..0d580d81d910f 100644
+--- a/drivers/net/macsec.c
++++ b/drivers/net/macsec.c
+@@ -2594,6 +2594,9 @@ static int macsec_upd_offload(struct sk_buff *skb, struct genl_info *info)
+ return PTR_ERR(dev);
+ macsec = macsec_priv(dev);
+
++ if (!tb_offload[MACSEC_OFFLOAD_ATTR_TYPE])
++ return -EINVAL;
++
+ offload = nla_get_u8(tb_offload[MACSEC_OFFLOAD_ATTR_TYPE]);
+ if (macsec->offload == offload)
+ return 0;
+--
+cgit 1.2.3-1.el7
+