CVE-2026-63870High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
0.1% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
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().
Linux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < af07fffbd53ddc3ec3c2a4ca914f27899fa89bcaLinux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < 3150e6d3223dfc356308125cabf9c34169842d2aLinux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < 8da95cb6ad7d656c871e776a9c7b77e894d6d89cLinux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < 1a827b95e62b4cbe851ae7cc9c961cdfa769cca4Linux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < c1819c8defa235c7beda859bc185b1c429a55ecdLinux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < 285b0842f2e01c3edf805f1fd64da11d9b7f6b4cLinux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < 87172cc8dc49aaf54407a31edffb0232f8cb93abLinux >= 4dc315e267fe4a3c863fec21f26aa0a418c3f07a < 3a5f3f7aff18bcc36a57839cf50cf0cc8de707f3Linux 4.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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