---
id: CVE-2022-48816
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  SUNRPC: lock against ->sock changing during sysfs read

  ->sock can be set to NULL asynchronously unless ->recv_mutex is held.
  So it is important to hold that mutex
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  SUNRPC: lock against ->sock changing during sysfs read

  ->sock can be set to NULL asynchronously unless ->recv_mutex is held.
  So it is important to hold that mutex.  Ot…
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-476
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.10.67, < 5.11'
  - 'linux_kernel >= 5.13.19, < 5.16.10'
  - linux_kernel = 5.17
patched:
  - linux_kernel 5.16.10
published: '2024-07-16'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:25.280'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-48816'
references:
  - url: 'https://git.kernel.org/stable/c/9482ab4540f5bcc869b44c067ae99b5fca16bd07'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b49ea673e119f59c71645e2f65b3ccad857c90ee'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cd366b9091a3e6ed8229e4b908e895d20b527dc0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fdc42287ae3f8a35cc2098307f52d7864b4bc8ed'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9482ab4540f5bcc869b44c067ae99b5fca16bd07'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/b49ea673e119f59c71645e2f65b3ccad857c90ee'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T16:58:15.719556Z'
epss: 0.00285
epssPercentile: 0.19054
ingestedAt: '2026-10-03T11:43:42.100Z'
---

## Overview

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

SUNRPC: lock against ->sock changing during sysfs read

->sock can be set to NULL asynchronously unless ->recv_mutex is held.
So it is important to hold that mutex.  Otherwise a sysfs read can
trigger an oops.
Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before
handling sysfs reads") appears to attempt to fix this problem, but it
only narrows the race window.

## Affected

- `linux_kernel >= 5.10.67, < 5.11`
- `linux_kernel >= 5.13.19, < 5.16.10`
- `linux_kernel = 5.17`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.16.10`