Eric Dumazet 3a5f3f7aff ieee802154: 6lowpan: only accept IPv6 packets in lowpan_xmit() ... The aoe driver (or similar) generates a non-IPv6 packet (e.g., ETH_P_AOE) and queues it for transmission via dev_queue_xmit() on a 6LoWPAN interface (configured by the user or test case). Since the packet is not IPv6, the 6LoWPAN header_ops->create function (lowpan_header_create or header_create) returns early without initializing the lowpan_addr_info structure in the skb headroom. In the transmit function (lowpan_xmit), the driver calls lowpan_header (or setup_header) which unconditionally copies and uses the lowpan_addr_info from the headroom, which contains uninitialized data. Fix this by dropping non IPv6 packets. A similar fix is needed in net/bluetooth/6lowpan.c bt_xmit(). Fixes: 4dc315e267 ("ieee802154: 6lowpan: move transmit functionality") Reported-by: syzbot+f13c19f75e1097abd116@syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/6a1fd763.278b5b03.2bcf39.0049.GAE@google.com/T/#u Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://patch.msgid.link/20260603072955.4032221-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2026-06-04 08:51:32 -07:00
..
6lowpan_i.h
core.c	net: move misc netdev_lock flavors to a separate header	2025-03-08 09:06:50 -08:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
reassembly.c	treewide, timers: Rename from_timer() to timer_container_of()	2025-06-08 09:07:37 +02:00
rx.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
tx.c	ieee802154: 6lowpan: only accept IPv6 packets in lowpan_xmit()	2026-06-04 08:51:32 -07:00