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linux/net/bridge
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Eric Dumazet ac704ff08e bridge: check llc_mac_hdr_init() return value in br_send_bpdu() 
If llc_mac_hdr_init() fails (for instance if the port device type does
not support LLC or dev_hard_header() fails), br_send_bpdu() should drop
the skb instead of resetting the mac header to the LLC payload and
transmitting a malformed frame.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Closes: https://lore.kernel.org/netdev/179022851638.2160803.1808206741379444999@kernel.org/
Cc: Nikolay Aleksandrov <razor@blackwall.org>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: bridge@lists.linux.dev
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260924082951.1599377-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-09-24 11:00:59 -07:00
..
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-08-13 11:00:14 -07:00
br_arp_nd_proxy.c net: bridge: arp/nd proxy: fix reading neigh ha 2026-08-20 14:23:06 -07:00
br_cfm_netlink.c bridge: cfm: reject invalid CCM interval at configuration time 2026-06-11 15:16:12 -07:00
br_cfm.c net: bridge: use option bits for CFM/MRP frame handlers 2026-09-08 17:48:49 -07:00
br_device.c net: bridge: use option bits for CFM/MRP frame handlers 2026-09-08 17:48:49 -07:00
br_fdb.c net: bridge: use atomic ops to read/change p->flags (I) 2026-06-12 18:03:46 -07:00
br_forward.c net: bridge: use atomic ops to read/change p->flags (I) 2026-06-12 18:03:46 -07:00
br_if.c bridge: stp: Fix a potential use-after-free when deleting a bridge 2026-06-30 15:14:35 +02:00
br_input.c net: bridge: use option bits for CFM/MRP frame handlers 2026-09-08 17:48:49 -07:00
br_ioctl.c bridge: provide lockless access to p->config_pending 2026-06-05 17:46:18 -07:00
br_mdb.c net: bridge: mdb: restart port group walk after deletion 2026-09-23 16:51:03 -07:00
br_mrp_netlink.c net: bridge: use atomic ops to read/change p->flags (II) 2026-06-12 18:03:46 -07:00
br_mrp_switchdev.c bridge: mrp: Extend br_mrp_switchdev to detect better the errors 2021-02-16 14:47:46 -08:00
br_mrp.c net: bridge: use option bits for CFM/MRP frame handlers 2026-09-08 17:48:49 -07:00
br_mst.c net: bridge: mst: move switchdev call outside rcu 2026-09-15 12:27:41 +02:00
br_multicast_eht.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
br_multicast.c net: bridge: mcast: properly convert mglist to rcu 2026-09-04 15:29:47 -07:00
br_netfilter_hooks.c netfilter: br_netfilter: Reallocate headroom if necessary in neigh_hh_bridge() 2026-05-16 13:22:50 +02:00
br_netfilter_ipv6.c netfilter: remove nf_ipv6_ops and use direct function calls 2026-03-29 11:21:24 -07:00
br_netlink_tunnel.c net: bridge: Reject descending VLAN tunnel ranges 2026-08-20 11:32:44 -07:00
br_netlink.c net: bridge: use atomic ops to read/change p->flags (III) 2026-06-12 18:03:46 -07:00
br_nf_core.c bridge: netfilter: Fix forwarding of fragmented packets 2025-05-16 16:02:06 -07:00
br_private_cfm.h bridge: cfm: Kernel space implementation of CFM. CCM frame RX added. 2020-10-29 18:39:43 -07:00
br_private_mcast_eht.h net: bridge: multicast: use multicast contexts instead of bridge or port 2021-07-20 05:41:19 -07:00
br_private_mrp.h net: bridge: mrp: Update the Test frames for MRA 2021-06-28 15:46:10 -07:00
br_private_stp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
br_private_tunnel.h bridge: always declare tunnel functions 2023-05-17 21:28:58 -07:00
br_private.h net: bridge: use option bits for CFM/MRP frame handlers 2026-09-08 17:48:49 -07:00
br_stp_bpdu.c bridge: check llc_mac_hdr_init() return value in br_send_bpdu() 2026-09-24 11:00:59 -07:00
br_stp_if.c bridge: provide lockless access to p->config_pending 2026-06-05 17:46:18 -07:00
br_stp_timer.c bridge: add a READ_ONCE() in br_timer_value() 2026-06-05 17:46:16 -07:00
br_stp.c bridge: stp: Fix a potential use-after-free when deleting a bridge 2026-06-30 15:14:35 +02:00
br_switchdev.c net: bridge: use atomic ops to read/change p->flags (III) 2026-06-12 18:03:46 -07:00
br_sysfs_br.c mm.git review status for linus..mm-nonmm-stable 2026-02-12 12:13:01 -08:00
br_sysfs_if.c bridge: use atomic ops to read/change p->flags in sysfs 2026-06-12 18:03:45 -07:00
br_vlan_options.c net: bridge: vlan: fix vlan range dumps starting with pvid 2026-07-22 10:23:18 -07:00
br_vlan_tunnel.c bridge: fix C-VLAN preservation in 802.1ad vlan_tunnel egress 2026-01-04 09:45:35 -08:00
br_vlan.c net: bridge: vlan: fix bugs caused by switchdev deletion errors 2026-09-15 18:31:57 -07:00
br.c net: remove unused ATM protocols and legacy ATM device drivers 2026-04-23 12:21:14 -07:00
Kconfig ipv6: convert CONFIG_IPV6 to built-in only and clean up Kconfigs 2026-03-29 11:21:22 -07:00
Makefile netfilter: add option for GCOV profiling 2026-05-24 22:55:47 +02:00