CVE-2019-16746 Memory corruption in n/a
A buffer overflow in the Linux kernel's wireless subsystem allows attackers to execute arbitrary code or escalate privileges via crafted beacon frames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-16746?
CVE-2019-16746 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 24 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow.
Weakness: CWE-120
Which versions are affected by CVE-2019-16746?
It affects 5 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Opensuse Leap.
How do I fix CVE-2019-16746?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-16746 being exploited?
There is no known exploitation of CVE-2019-16746 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as A-145728612, ASB-A-145728612, DEBIAN-CVE-2019-16746, GHSA-7rf2-mmqc-5w99, UBUNTU-CVE-2019-16746.