---
id: CVE-2022-1055
title: >-
  A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow
  a local attacker to gain privilege escalation
summary: >-
  A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow
  a local attacker to gain privilege escalation. The exploit requires
  unprivileged user namespaces. We recommend upgrading past commit
  04c2a47ffb13c29778e2a14e4…
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: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.1, < 5.17'
  - linux_kernel = 5.17
  - enterprise_linux = 8.0
  - fedora = 35
  - ubuntu_linux = 16.04
  - ubuntu_linux = 18.04
  - ubuntu_linux = 20.04
  - ubuntu_linux = 21.10
  - ubuntu_linux = 22.04
  - h300s_firmware
  - h500s_firmware
  - h700s_firmware
  - h300e_firmware
  - h500e_firmware
  - h700e_firmware
  - h410s_firmware
  - h410c_firmware
patched:
  - linux_kernel 5.17
published: '2022-03-29'
updated: '2026-07-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1055'
references:
  - url: >-
      http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
    label: cve-coordination@google.com
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
    label: cve-coordination@google.com
  - url: 'https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5'
    label: cve-coordination@google.com
  - url: 'https://security.netapp.com/advisory/ntap-20220506-0007/'
    label: cve-coordination@google.com
  - url: >-
      https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc
    label: cve-coordination@google.com
  - url: >-
      http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20220506-0007/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00504
epssPercentile: 0.42147
ingestedAt: '2026-07-29T14:48:16.062Z'
---

## Overview

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

## Affected

- `linux_kernel >= 5.1, < 5.17`
- `linux_kernel = 5.17`
- `enterprise_linux = 8.0`
- `fedora = 35`
- `ubuntu_linux = 16.04`
- `ubuntu_linux = 18.04`
- `ubuntu_linux = 20.04`
- `ubuntu_linux = 21.10`
- `ubuntu_linux = 22.04`
- `h300s_firmware`
- `h500s_firmware`
- `h700s_firmware`
- `h300e_firmware`
- `h500e_firmware`
- `h700e_firmware`
- `h410s_firmware`
- `h410c_firmware`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.17`