---
id: CVE-2022-49048
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipv6: fix panic when forwarding a pkt with no in6 dev

  kongweibin reported a kernel panic in ip6_forward() when input interface
  has no in6 dev associated.

  The followin…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipv6: fix panic when forwarding a pkt with no in6 dev

  kongweibin reported a kernel panic in ip6_forward() when input interface
  has no in6 dev associated.

  The followin…
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'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.19.199, < 4.19.239'
  - 'linux_kernel >= 5.4.136, < 5.4.190'
  - 'linux_kernel >= 5.10.54, < 5.10.112'
  - 'linux_kernel >= 5.13.6, < 5.14'
  - 'linux_kernel >= 5.14.1, < 5.15.35'
  - 'linux_kernel >= 5.16, < 5.17.4'
  - linux_kernel = 5.14
  - linux_kernel = 5.18
patched:
  - linux_kernel 5.17.4
published: '2025-02-26'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:22.530'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-49048'
references:
  - url: 'https://git.kernel.org/stable/c/74b68f5249f16c5f7f675d0f604fa6ae20e3a151'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a263712ba8c9ded25dd9d2d5ced11bcea5b33a3e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ab2f5afb7af5c68389e8c7dd29e0a98fbeaaa435'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/adee01bbf6cb5b3e4ed08be8ff866aac90f13836'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e3fa461d8b0e185b7da8a101fe94dfe6dd500ac0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e69fb3de87a8923e5931a272a38fa3cceb01da44'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00692
epssPercentile: 0.52692
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-15T21:06:06.258199Z'
ingestedAt: '2026-10-15T21:45:11.291Z'
---

## Overview

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

ipv6: fix panic when forwarding a pkt with no in6 dev

kongweibin reported a kernel panic in ip6_forward() when input interface
has no in6 dev associated.

The following tc commands were used to reproduce this panic:
tc qdisc del dev vxlan100 root
tc qdisc add dev vxlan100 root netem corrupt 5%

## Affected

- `linux_kernel >= 4.19.199, < 4.19.239`
- `linux_kernel >= 5.4.136, < 5.4.190`
- `linux_kernel >= 5.10.54, < 5.10.112`
- `linux_kernel >= 5.13.6, < 5.14`
- `linux_kernel >= 5.14.1, < 5.15.35`
- `linux_kernel >= 5.16, < 5.17.4`
- `linux_kernel = 5.14`
- `linux_kernel = 5.18`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.17.4`