update sources to Ubuntu-5.4.0-49.53

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

patches/kernel/0007-net-packet-fix-overflow-in-tpacket_rcv.patch

@@ -1,48 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Or Cohen <orcohen@paloaltonetworks.com>
-Date: Sun, 30 Aug 2020 20:04:51 +0300
-Subject: [PATCH] net/packet: fix overflow in tpacket_rcv
-
-Using tp_reserve to calculate netoff can overflow as
-tp_reserve is unsigned int and netoff is unsigned short.
-
-This may lead to macoff receving a smaller value then
-sizeof(struct virtio_net_hdr), and if po->has_vnet_hdr
-is set, an out-of-bounds write will occur when
-calling virtio_net_hdr_from_skb.
-
-The bug is fixed by converting netoff to unsigned int
-and checking if it exceeds USHRT_MAX.
-
-Fixes: 8913336a7e8d ("packet: add PACKET_RESERVE sockopt")
-Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- net/packet/af_packet.c | 7 ++++++-
- 1 file changed, 6 insertions(+), 1 deletion(-)
-
-diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
-index 7735340c892e..fbc2d4dfddf0 100644
---- a/net/packet/af_packet.c
-+++ b/net/packet/af_packet.c
-@@ -2169,7 +2169,8 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
- 	int skb_len = skb->len;
- 	unsigned int snaplen, res;
- 	unsigned long status = TP_STATUS_USER;
--	unsigned short macoff, netoff, hdrlen;
-+	unsigned short macoff, hdrlen;
-+	unsigned int netoff;
- 	struct sk_buff *copy_skb = NULL;
- 	struct timespec ts;
- 	__u32 ts_status;
-@@ -2238,6 +2239,10 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
- 		}
- 		macoff = netoff - maclen;
- 	}
-+	if (netoff > USHRT_MAX) {
-+		atomic_inc(&po->tp_drops);
-+		goto drop_n_restore;
-+	}
- 	if (po->tp_version <= TPACKET_V2) {
- 		if (macoff + snaplen > po->rx_ring.frame_size) {
- 			if (po->copy_thresh &&

submodules/ubuntu-focal

@@ -1 +1 @@
-Subproject commit dd82b8d705861502afb7de0210e694ff1769a89a
+Subproject commit fd386a64a1ed3f2f047318508ebd733f56a4fab2