CVE-2026-18415

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...

CVE-2026-18415 Out-of-bounds write in the IEEE 802.15.4 L2 transmit path for oversized non-6LoWPAN frames

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...

CVE-2026-18415

Zephyr OS is vulnerable to a supervisor-mode out-of-bounds write in the ieee802154_send() function within subsys/net/l2/ieee802154/ieee802154.c. When CONFIG_NET_L2_IEEE802154_FRAGMENT is enabled, the system performs an unchecked net_buf_add_mem() call for packets not requiring 6LoWPAN fragmentati...

CVE-2026-18415

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...

CVE-2026-18415 Out-of-bounds write in the IEEE 802.15.4 L2 transmit path for oversized non-6LoWPAN frames

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...

EUVD-2026-88473

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...

CVE-2026-18415 Out-of-bounds write in the IEEE 802.15.4 L2 transmit path for oversized non-6LoWPAN frames

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...

CVE-2026-18415: Out-of-bounds Write

ieee802154send in subsys/net/l2/ieee802154/ieee802154.c copies the outgoing packet into a single fixed 125-byte transmit buffer txframebufpool, sized IEEE802154MTU. In builds with CONFIGNETL2IEEE802154FRAGMENT enabled the default whenever CONFIGNET6LO is set, the branch taken when 6LoWPAN...