---
id: CVE-2022-1011
title: >-
  A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the
  way a user triggers write()
summary: >-
  A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the
  way a user triggers write(). This flaw allows a local user to gain
  unauthorized access to data from the FUSE filesystem, resulting in privilege
  escalation.
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-416
  - CWE-416
vendor: redhat
product: build_of_quarkus
affected:
  - 'linux_kernel >= 2.6.35, < 4.9.320'
  - 'linux_kernel >= 4.10, < 4.14.276'
  - 'linux_kernel >= 4.15, < 4.19.238'
  - 'linux_kernel >= 4.20, < 5.4.185'
  - 'linux_kernel >= 5.5, < 5.10.106'
  - 'linux_kernel >= 5.11, < 5.15.29'
  - 'linux_kernel >= 5.16, < 5.16.15'
  - linux_kernel = 5.17
  - fedora = 34
  - fedora = 35
  - build_of_quarkus = 2.0
  - developer_tools = 1.0
  - enterprise_linux = 6.0
  - enterprise_linux = 7.0
  - enterprise_linux = 8.0
  - enterprise_linux_eus = 8.6
  - enterprise_linux_for_ibm_z_systems = 8.0
  - enterprise_linux_for_ibm_z_systems_eus = 8.6
  - enterprise_linux_for_power_little_endian = 8.0
  - enterprise_linux_for_power_little_endian_eus = 8.6
  - enterprise_linux_for_real_time = 8
  - enterprise_linux_for_real_time_for_nfv = 8
  - enterprise_linux_for_real_time_for_nfv_tus = 8.6
  - enterprise_linux_for_real_time_tus = 8.6
  - enterprise_linux_server_aus = 8.6
  - >-
    enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
    = 8.6
  - enterprise_linux_server_tus = 8.6
  - enterprise_linux_server_update_services_for_sap_solutions = 8.6
  - virtualization_host = 4.0
  - codeready_linux_builder
  - h300s_firmware
  - h500s_firmware
  - h700s_firmware
  - h300e_firmware
  - h500e_firmware
  - h700e_firmware
  - h410s_firmware
  - h410c_firmware
  - debian_linux = 9.0
  - debian_linux = 10.0
  - communications_cloud_native_core_binding_support_function = 22.1.3
patched:
  - linux_kernel 5.16.15
published: '2022-03-18'
updated: '2026-08-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1011'
references:
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2064855'
    label: secalert@redhat.com
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git/commit/?h=for-next
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html'
    label: secalert@redhat.com
  - url: 'https://www.debian.org/security/2022/dsa-5173'
    label: secalert@redhat.com
  - url: 'https://www.oracle.com/security-alerts/cpujul2022.html'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2064855'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git/commit/?h=for-next
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2022/dsa-5173'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.oracle.com/security-alerts/cpujul2022.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.01169
epssPercentile: 0.65537
ingestedAt: '2026-08-26T18:47:53.552Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/xkaneiki/CVE-2022-1011'
  checkedAt: '2026-09-21T15:24:52.851Z'
exploitAvailable: true
---

## Overview

A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the way a user triggers write(). This flaw allows a local user to gain unauthorized access to data from the FUSE filesystem, resulting in privilege escalation.

## Affected

- `linux_kernel >= 2.6.35, < 4.9.320`
- `linux_kernel >= 4.10, < 4.14.276`
- `linux_kernel >= 4.15, < 4.19.238`
- `linux_kernel >= 4.20, < 5.4.185`
- `linux_kernel >= 5.5, < 5.10.106`
- `linux_kernel >= 5.11, < 5.15.29`
- `linux_kernel >= 5.16, < 5.16.15`
- `linux_kernel = 5.17`
- `fedora = 34`
- `fedora = 35`
- `build_of_quarkus = 2.0`
- `developer_tools = 1.0`
- `enterprise_linux = 6.0`
- `enterprise_linux = 7.0`
- `enterprise_linux = 8.0`
- `enterprise_linux_eus = 8.6`
- `enterprise_linux_for_ibm_z_systems = 8.0`
- `enterprise_linux_for_ibm_z_systems_eus = 8.6`
- `enterprise_linux_for_power_little_endian = 8.0`
- `enterprise_linux_for_power_little_endian_eus = 8.6`
- `enterprise_linux_for_real_time = 8`
- `enterprise_linux_for_real_time_for_nfv = 8`
- `enterprise_linux_for_real_time_for_nfv_tus = 8.6`
- `enterprise_linux_for_real_time_tus = 8.6`
- `enterprise_linux_server_aus = 8.6`
- `enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions = 8.6`
- `enterprise_linux_server_tus = 8.6`
- `enterprise_linux_server_update_services_for_sap_solutions = 8.6`
- `virtualization_host = 4.0`
- `codeready_linux_builder`
- `h300s_firmware`
- `h500s_firmware`
- `h700s_firmware`
- `h300e_firmware`
- `h500e_firmware`
- `h700e_firmware`
- `h410s_firmware`
- `h410c_firmware`
- `debian_linux = 9.0`
- `debian_linux = 10.0`
- `communications_cloud_native_core_binding_support_function = 22.1.3`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.16.15`