---
id: CVE-2026-80646
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipv6: guard against possible NULL deref in __in6_dev_stats_get()

  dev_get_by_index_rcu() could return NULL if the original physical
  device is unregistered.

  Found by Sa…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipv6: guard against possible NULL deref in __in6_dev_stats_get()

  dev_get_by_index_rcu() could return NULL if the original physical
  device is unregistered.

  Found by Sa…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
published: '2026-08-28'
updated: '2026-08-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80646'
references:
  - url: 'https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/952426a83ca75cea25c09d58944abafaa3ebd242'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fc920c0659cdea5afd8721c1155a51564859e075'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00508
epssPercentile: 0.42397
ingestedAt: '2026-08-30T03:46:31.260Z'
---

## Overview

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

ipv6: guard against possible NULL deref in __in6_dev_stats_get()

dev_get_by_index_rcu() could return NULL if the original physical
device is unregistered.

Found by Sashiko.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.