CVE-2020-14416 Use after free in n/a
A race condition in the Linux kernel's slip and slcan line disciplines allows attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-14416?
CVE-2020-14416 is a medium-severity use after free vulnerability in Linux kernel, published on 18 Jun 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In the Linux kernel before 5.4.16, a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c.
Which versions are affected by CVE-2020-14416?
It affects 2 products.
Products include Linux kernel, Opensuse Leap.
How do I fix CVE-2020-14416?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-14416 being exploited?
There is no known exploitation of CVE-2020-14416 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2020-14416, GHSA-whm7-h297-5ccm, UBUNTU-CVE-2020-14416.