CVE-2019-25162 i2c: Fix a potential use after free
A use-after-free vulnerability in the Linux kernel's I2C subsystem allows attackers to potentially execute arbitrary code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-25162?
CVE-2019-25162 is a high-severity use after free vulnerability in Linux kernel, published on 26 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
i2c: Fix a potential use after free
Free the adap structure only after we are done using it. This patch just moves the put_device() down a bit to avoid the use after free.
[wsa: added comment to the code, added Fixes tag]
Weakness: CWE-416
Which versions are affected by CVE-2019-25162?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2019-25162?
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-2019-25162 being exploited?
There is no known exploitation of CVE-2019-25162 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2019-25162, GHSA-mr92-3m8f-x735, UBUNTU-CVE-2019-25162.