CVE-2026-97601

ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink

State: Published
Severity: Not scored
Published: Sep 25, 2026
Updated: Oct 19, 2026
Reserved: Sep 24, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink

TUNSETLINK allows a TUN device to change its link-layer type to ARPHRD_IEEE802154 without initializing ieee802154_ptr. lowpan_newlink() checks only the device type before dereferencing the pointer, so an RTM_NEWLINK request can trigger a NULL pointer dereference.

Reject devices without ieee802154_ptr along with devices of the wrong type.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before a1760f21c32adce41af5ed5687200865d8feaaebAffected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 5063b9354e6e285dae61e530b30458498444a914Affected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021eAffected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 543994fa03c36a91d967a12c5c99cae74899504cAffected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 1c7710af7ad9532b534f1c134c11b04dbe4e0e0fAffected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 98ce5a42cde780ee0e40378607d4428c8fc12ec1Affected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 8528da2333ce05cf627f93425f9d05efb08b3146Affected 51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before bf79662bc85e820ac3b846e2f347da29fbf6ac95Affected
LinuxLinux	4.3Affected before 4.3Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2.7 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before a1760f21c32adce41af5ed5687200865d8feaaebAffected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 5063b9354e6e285dae61e530b30458498444a914Affected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021eAffected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 543994fa03c36a91d967a12c5c99cae74899504cAffected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 1c7710af7ad9532b534f1c134c11b04dbe4e0e0fAffected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 98ce5a42cde780ee0e40378607d4428c8fc12ec1Affected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before 8528da2333ce05cf627f93425f9d05efb08b3146Affected
51e0e5d8124ece158927a4c2288c0929d3b53aa3 to before bf79662bc85e820ac3b846e2f347da29fbf6ac95Affected

LinuxLinux

4.3Affected
before 4.3Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2.7 through 7.2.*Not affected
7.3 and laterNot affected

References

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