Name: CVE-2016-1886: Improper Restriction of Operations within the Bounds of a Memory Buffer
Creator: Rapid7
Published: 2016-05-25T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2016-1886, CWE-119, CVSS 7.8, EPSS 0.00219

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."

CVSS Details

CVSS 3.1 Base Score: 7.8
CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade FreeBSD	Dec 10, 2025	Aug 11, 2016

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CVSS Details

Covered by Rapid7

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