CVE-2018-6921 - CVE House
Back to Database
Status published Medium CVE-2018-6921

In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization...

Vulnerability Description

In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of privileged kernel data.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2018-6921

Credits & Attribution

No credits recorded in the NVD database.

References

More from FreeBSD

View All →
CVE-2025-24934
SO_REUSEPORT_LB breaks connect(2) for UDP sockets
Unknown 0
CVE-2025-15576
Jail chroot escape via fd exchange with a different jail
Unknown 0
CVE-2025-15547
Jail escape by a privileged user via nullfs
Unknown 0
CVE-2025-14769
ipfw denial of service
Unknown 0
CVE-2025-14558
Remote code execution via ND6 Router Advertisements
Unknown 0

Affected Vendor

Affected Software

FreeBSD
Vulnerable Versions:
FreeBSD 11.x prior to 11.1-RELEASE-p10.

Timeline

Official Publish: May 8th, 2018
Last Modified: September 17th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.