CVE-2016-1886 Integer overflow in n/a
Local attackers can exploit an integer signedness error in the FreeBSD kernel to gain privileges or cause a denial of service via a crafted ioctl call.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-1886?
CVE-2016-1886 is a high-severity vulnerability in Freebsd Freebsd, published on 25 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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."
Weakness: CWE-119
Which versions are affected by CVE-2016-1886?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2016-1886?
No fix has been published for CVE-2016-1886 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-1886 being exploited?
There is no known exploitation of CVE-2016-1886 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-3pmm-q6gm-q5rg.