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CVE-2026-97601

Linux: ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 10% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in5063b9354e6e285dae61e530b30458498444a914Also 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021e, 543994fa03c36a91d967a12c5c99cae74899504c and 3 moreCVE List
Published25 Sep 2026Updated 19 Oct 2026CVE List

What fixes it

  • 5063b9354e6e285dae61e530b30458498444a914LinuxCVE List
  • 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021eLinuxCVE List
  • 543994fa03c36a91d967a12c5c99cae74899504cLinuxCVE List
  • 1c7710af7ad9532b534f1c134c11b04dbe4e0e0fLinuxCVE List
  • 98ce5a42cde780ee0e40378607d4428c8fc12ec1LinuxCVE List
  • 8528da2333ce05cf627f93425f9d05efb08b3146LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 18

  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before a1760f21c32adce41af5ed5687200865d8feaaebCVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before 5063b9354e6e285dae61e530b30458498444a914CVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021eCVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before 543994fa03c36a91d967a12c5c99cae74899504cCVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before 1c7710af7ad9532b534f1c134c11b04dbe4e0e0fCVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before 98ce5a42cde780ee0e40378607d4428c8fc12ec1CVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before 8528da2333ce05cf627f93425f9d05efb08b3146CVE List
  • Linuxaffected: 51e0e5d8124ece158927a4c2288c0929d3b53aa3 before bf79662bc85e820ac3b846e2f347da29fbf6ac95CVE List
  • Linuxaffected: 4.3CVE List
  • Linuxunaffected: all versions before 4.3CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2.7 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 8