CVE-2022-1055

What it is

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

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-03-29 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-08-13 19:30 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% in the next 30 days (EPSS).
• Severity: 8.6 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-03-29 15:15 UTC

Last modified

2026-08-13 19:30 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-416 · Use after free

Record status

Analyzed

Affected

• Linux Kernel < 5.4.177
• Linux Kernel < 5.10.97
• Linux Kernel < 5.15.20
• Linux Kernel < 5.16.6
• Redhat Enterprise Linux 8.0
• Fedoraproject Fedora 35
• Canonical Ubuntu Linux 16.04
• Canonical Ubuntu Linux 18.04

Attack profile CVSS 4.0 · 8.6

Attack vector

Local

Complexity

High

Attack requirements

None

Privileges needed

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-1055.md and follow it. Check whether this project is affected by CVE-2022-1055. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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