CVE-2026-98302Public exploit

Kernel oops via down-interface MAC address change

Published Oct 6, 2026 · Updated Oct 6, 2026

A NULL dereference in the Linux kernel skfp FDDI driver allows local users to trigger a kernel oops by changing a down interface's MAC address. skfp_ctl_set_mac_address() resets the adapter before its transmit queues are initialized, and mac_drv_clear_tx_queue() dereferences a NULL queue pointer. Triggering the fault requires CAP_NET_ADMIN and an skfp interface that has never been brought up; the demonstrated consequence is an oops, not code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

A NULL dereference in the Linux kernel skfp FDDI driver allows local users to trigger a kernel oops by changing a down interface's MAC address. skfp_ctl_set_mac_address() resets the adapter before its transmit queues are initialized, and mac_drv_clear_tx_queue() dereferences a NULL queue pointer. Triggering the fault requires CAP_NET_ADMIN and an skfp interface that has never been brought up; the demonstrated consequence is an oops, not code execution.

The record

CVE
CVE-2026-98302
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <438131e7ae847e907d345bf504d7e25585561b5c
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5fd0f401b3eee95c93daa35ef99cb03d676031f0
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <616ba18b2cfb72b7bea214bdd72df2485b2e37dc
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <731db6110b3148331ed8d5d11a564bfd520721d9
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7c8810c2e69c3d9ca6df870b40ae9218e50b4fb1
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <822903ed991971780db1db1be31a4f00e2b13e30
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <835903bea770ad96ab4322e18d98e00f8e0b39c3
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6f63fdb298d546a47790cb373db65462c264d04
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <438131e7ae847e907d345bf504d7e25585561b5c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5fd0f401b3eee95c93daa35ef99cb03d676031f0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <616ba18b2cfb72b7bea214bdd72df2485b2e37dc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <731db6110b3148331ed8d5d11a564bfd520721d9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7c8810c2e69c3d9ca6df870b40ae9218e50b4fb1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <822903ed991971780db1db1be31a4f00e2b13e30; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <835903bea770ad96ab4322e18d98e00f8e0b39c3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6f63fdb298d546a47790cb373db65462c264d04; version=2.6.12

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started