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CVE-2026-97601· NVD / CVE Program· CNA Linux

ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021e, 1c7710af7ad9532b534f1c134c11b04dbe4e0e0f, 5063b9354e6e285dae61e530b30458498444a914; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021e, 1c7710af7ad9532b534f1c134c11b04dbe4e0e0f, 5063b9354e6e285dae61e530b30458498444a914; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Sep 25, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.3affected
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before a1760f21c32adce41af5ed5687200865d8feaaebaffected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before 5063b9354e6e285dae61e530b30458498444a914affected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before 16d8e0b560d50cd1a9e6d77a9a154a94c4d6021eaffected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before 543994fa03c36a91d967a12c5c99cae74899504caffected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before 1c7710af7ad9532b534f1c134c11b04dbe4e0e0faffected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before 98ce5a42cde780ee0e40378607d4428c8fc12ec1affected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before 8528da2333ce05cf627f93425f9d05efb08b3146affected · git
    • 51e0e5d8124ece158927a4c2288c0929d3b53aa3 and later · before bf79662bc85e820ac3b846e2f347da29fbf6ac95affected · git
    • before 4.3not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.7-17.2.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-97599Sep 25, 2026 · ieee802154: hwsim: serialize pib updates to fix double-free
    0Monitor
  • ← EarlierCVE-2026-97600Sep 25, 2026 · ieee802154: cc2520: fix FIFOP work use-after-free
    0Monitor
  • Later →CVE-2026-97602Sep 25, 2026 · inet: frags: invalidate queues before flushing them
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux16d8e0b560d50cd1a9e6d77a9a154a94c4d6021eVendor (CNA)
Linux Linux1c7710af7ad9532b534f1c134c11b04dbe4e0e0fVendor (CNA)
Linux Linux5063b9354e6e285dae61e530b30458498444a914Vendor (CNA)
Linux Linux543994fa03c36a91d967a12c5c99cae74899504cVendor (CNA)
Linux Linux8528da2333ce05cf627f93425f9d05efb08b3146Vendor (CNA)
Linux Linux98ce5a42cde780ee0e40378607d4428c8fc12ec1Vendor (CNA)
Linux Linuxa1760f21c32adce41af5ed5687200865d8feaaebVendor (CNA)
Linux Linuxbf79662bc85e820ac3b846e2f347da29fbf6ac95Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records