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FreeBSD: FreeBSD -- Buffer overflow in keyboard driver (FreeBSD-SA-16:18.atkbd) (CVE-2016-1886)

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FreeBSD: FreeBSD -- Buffer overflow in keyboard driver (FreeBSD-SA-16:18.atkbd) (CVE-2016-1886)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
05/25/2016
Created
07/25/2018
Added
08/12/2016
Modified
10/30/2017

Description

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."

Solution(s)

  • freebsd-upgrade-base-10_1-release-p34
  • freebsd-upgrade-base-10_2-release-p17
  • freebsd-upgrade-base-10_3-release-p3
  • freebsd-upgrade-base-9_3-release-p42

References

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