Vulnerability 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."
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freebsd | Freebsd | 9.3 |
Related Weaknesses (CWE)
References
- http://cturt.github.io/SETFKEY.htmlExploit
- http://www.securityfocus.com/bid/90734
- http://www.securitytracker.com/id/1035905
- https://security.FreeBSD.org/patches/SA-16:18/atkbd.patchPatch
- https://www.freebsd.org/security/advisories/FreeBSD-SA-16:18.atkbd.ascVendor Advisory
- http://cturt.github.io/SETFKEY.htmlExploit
- http://www.securityfocus.com/bid/90734
- http://www.securitytracker.com/id/1035905
- https://security.FreeBSD.org/patches/SA-16:18/atkbd.patchPatch
- https://www.freebsd.org/security/advisories/FreeBSD-SA-16:18.atkbd.ascVendor Advisory
FAQ
What is CVE-2016-1886?
CVE-2016-1886 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2016-1886?
CVE-2016-1886 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-1886?
Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.