CVE-2022-0492 Linux Kernel: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Jun 5, 2026
What to do
- Install Linux's security update for Kernel. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic updates for the operating system and for Office, PDF and archive apps.
- Be careful with unexpected attachments — documents, .zip/.rar files and shortcuts are common bait.
- Use a normal (non-admin) account day to day and keep built-in protection like Microsoft Defender on.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Your files, saved passwords and accounts. Many of these let a program that is already running gain full administrator control.
The details
- Official name
- Linux Kernel Improper Authentication Vulnerability
- Product
- Linux Kernel
- CISA description
- Linux Kernel contains an improper authentication vulnerability which could allow for privilege escalation via the cgroups v1 release_agent feature.
- Type of flaw
- Login or permission bypass (CWE-287, CWE-862)
- Confirmed exploited
- Jun 2, 2026
- US federal patch deadline
- Jun 5, 2026
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Answering about CVE-2022-0492 ·
Questions about CVE-2022-0492
Is CVE-2022-0492 being exploited?
Yes. CISA added CVE-2022-0492 to its Known Exploited Vulnerabilities catalog on Jun 2, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2022-0492?
Install Linux's security update for Kernel. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic updates for the operating system and for Office, PDF and archive apps.
Am I affected by CVE-2022-0492?
Only if you use Linux Kernel. This one is aimed at devices or apps of the kind people own.