What is CVE-2017-7541?

CVE-2017-7541 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-25.

How severe is CVE-2017-7541?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2017-7541 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Linux Kernel

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 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.

Vulnerability class: Buffer Overflow

Published 2017-07-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (43.9th percentile), scored 2026-10-06.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Linux Kernel
Linux Kernel Before 4.12.3 — versions Linux kernel before 4.12.3

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

freener/pocs

References

www.debian.org/security/2017/dsa-3927 (vendor-advisory, Third Party Advisory)
github.com/torvalds/linux/commit/8f44c9a41386729fea410e688959ddaa9d51be7c (Patch, Third Party Advisory, Issue Tracking)
www.securityfocus.com/bid/99955 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/errata/RHSA-2017:2918 (vendor-advisory, Third Party Advisory)
access.redhat.com/errata/RHSA-2017:2931 (vendor-advisory, Third Party Advisory)
source.android.com/security/bulletin/2017-11-01 (Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
access.redhat.com/errata/RHSA-2017:2863 (vendor-advisory, Third Party Advisory)
www.securitytracker.com/id/1038981 (VDB Entry, Third Party Advisory, vdb-entry)
bugzilla.novell.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-7541?: CVE-2017-7541 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-25.
How severe is CVE-2017-7541?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2017-7541 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.