---
id: CVE-2022-49905
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/smc: Fix possible leaked pernet namespace in smc_init()

  In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called
  without any error handling.
  If it fails,…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/smc: Fix possible leaked pernet namespace in smc_init()

  In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called
  without any error handling.
  If it fails,…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.14, < 5.15.78'
  - 'linux_kernel >= 5.16, < 6.0.8'
  - linux_kernel = 6.1
patched:
  - linux_kernel 6.0.8
published: '2025-05-01'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:25.867'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-49905'
references:
  - url: 'https://git.kernel.org/stable/c/61defd6450a9ef4a1487090449999b0fd83518ef'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/62ff373da2534534c55debe6c724c7fe14adb97f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c97daf836f7caf81d3144b8cd2b2a51f9bc3bd09'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.0021
epssPercentile: 0.11167
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:29:44.271140Z'
ingestedAt: '2026-10-15T21:45:11.287Z'
---

## Overview

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

net/smc: Fix possible leaked pernet namespace in smc_init()

In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called
without any error handling.
If it fails, registering of &smc_net_ops won't be reverted.
And if smc_nl_init() fails, &smc_net_stat_ops itself won't be reverted.

This leaves wild ops in subsystem linkedlist and when another module
tries to call register_pernet_operations() it triggers page fault:

BUG: unable to handle page fault for address: fffffbfff81b964c
RIP: 0010:register_pernet_operations+0x1b9/0x5f0
Call Trace:
  <TASK>
  register_pernet_subsys+0x29/0x40
  ebtables_init+0x58/0x1000 [ebtables]
  ...

## Affected

- `linux_kernel >= 5.14, < 5.15.78`
- `linux_kernel >= 5.16, < 6.0.8`
- `linux_kernel = 6.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.0.8`