CVE-2024-26978 serial: max310x: fix NULL pointer dereference in I2C instantiation
A local attacker can cause a kernel crash by instantiating a specific I2C device, leading to denial of service.
- 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-2024-26978?
CVE-2024-26978 is a medium-severity vulnerability in Linux kernel, published on 1 May 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:
serial: max310x: fix NULL pointer dereference in I2C instantiation
When trying to instantiate a max14830 device from userspace:
echo max14830 0x60 > /sys/bus/i2c/devices/i2c-2/new_device
we get the following error:
Unable to handle kernel NULL pointer dereference at virtual address... ... Call trace: max310x_i2c_probe+0x48/0x170 [max310x] i2c_device_probe+0x150/0x2a0 ...
Add check for validity of devtype to prevent the error, and abort probe with a meaningful error message.
Weakness: CWE-476
Which versions are affected by CVE-2024-26978?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-26978?
Apply the vendor's patch.
Is CVE-2024-26978 being exploited?
There is no known exploitation of CVE-2024-26978 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-42222, BELL-CVE-2024-26978, DEBIAN-CVE-2024-26978, GHSA-qppw-2696-658w, UBUNTU-CVE-2024-26978.