What is the severity of CVE-2016-1886?

CVE-2016-1886 is considered to have a high severity due to its potential impact on system security and stability.

How do I fix CVE-2016-1886?

To fix CVE-2016-1886, upgrade FreeBSD to versions 9.3-p42, 10.1-p34, 10.2-p17, or 10.3-p3 or later.

What types of vulnerabilities does CVE-2016-1886 introduce?

CVE-2016-1886 introduces risks of sensitive information disclosure, denial of service, and potential kernel crashes.

Who is affected by CVE-2016-1886?

Local users of vulnerable FreeBSD versions are affected by CVE-2016-1886.

What is the cause of CVE-2016-1886?

CVE-2016-1886 is caused by an integer signedness error in the genkbd_commonioctl function in FreeBSD.

Vulnerability/
CVE-2016-1886

high

7.8

CWE

119

25/5/2016

5/8/2024

CVE-2016-1886: Buffer Overflow

First published: Wed May 25 2016(Updated: )

Integer signedness error in the genkbd_commonioctl function in sys/dev/kbd/kbd.c in FreeBSD 9.3 before p42, 10.1 before p34, 10.2 before p17, and 10.3 before p3 allows local users to obtain sensitive information from kernel memory, cause a denial of service (memory overwrite and kernel crash), or gain privileges via a negative value in the flen structure member in the arg argument in a SETFKEY ioctl call, which triggers a "two way heap and stack overflow."

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
FreeBSD Kernel	=9.3
FreeBSD Kernel	=10.1
FreeBSD Kernel	=10.2
FreeBSD Kernel	=10.3

Remedy

https://security.FreeBSD.org/patches/SA-16:18/atkbd.patch

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2016-1886?
CVE-2016-1886 is considered to have a high severity due to its potential impact on system security and stability.
How do I fix CVE-2016-1886?
To fix CVE-2016-1886, upgrade FreeBSD to versions 9.3-p42, 10.1-p34, 10.2-p17, or 10.3-p3 or later.
What types of vulnerabilities does CVE-2016-1886 introduce?
CVE-2016-1886 introduces risks of sensitive information disclosure, denial of service, and potential kernel crashes.
Who is affected by CVE-2016-1886?
Local users of vulnerable FreeBSD versions are affected by CVE-2016-1886.
What is the cause of CVE-2016-1886?
CVE-2016-1886 is caused by an integer signedness error in the genkbd_commonioctl function in FreeBSD.

agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/weakness
agent/author
agent/remedy
agent/references
agent/severity
agent/last-modified-date
agent/description
agent/first-publish-date
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/freebsd
canonical/freebsd kernel
version/freebsd kernel/9.3
version/freebsd kernel/10.1
version/freebsd kernel/10.2
version/freebsd kernel/10.3

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