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CVE-2016-8658

21
FAUCET Score

CVE-2016-8658 describes a stack-based buffer overflow in the brcmf_cfg80211_start_ap function within the Broadcom brcmfmac driver in Linux kernel versions prior to 4.7.5. This vulnerability allows a local attacker to trigger a denial of service (system crash) and potentially other unspecified impacts by sending a crafted command with an overly long SSID Information Element to a Netlink socket. Rated as MEDIUM severity with a CVSS score of 6.1, it requires local access and low attack complexity, primarily leading to high impact on availability and low impact on integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.7.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
4.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 94th percentile among its peer group of 15,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2016-8658Low

kernel: Stack buffer overflow in brcmf_cfg80211_start_ap

Sep 7, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatch
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/ded89912156b1a47d940a0c954c43afbabd0c42c
Issue TrackingPatch
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.7.5
Release Notes
openwall.com / lists/oss-security/2016/10/13/1
Mailing List
securityfocus.com / bid/93541
ubuntu.com / usn/USN-3145-1
ubuntu.com / usn/USN-3145-2
ubuntu.com / usn/USN-3146-1
ubuntu.com / usn/USN-3146-2