CVE-2026-64279 i2c: core: fix adapter deregistration race
A race condition in the Linux kernel i2c core allows use-after-free during adapter deregistration, potentially causing system crashes.
- 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-2026-64279?
CVE-2026-64279 is a high-severity vulnerability in Linux kernel, published on 25 Jul 2026. 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: core: fix adapter deregistration race
Adapters can be looked up by their id using i2c_get_adapter() which takes a reference to the embedded struct device.
Remove the adapter from the IDR before tearing it down during deregistration (and on registration failure) to make sure its resources are not accessed after having been freed (e.g. the device name).
Weakness: CWE-362
Which versions are affected by CVE-2026-64279?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64279?
Apply the vendor's patch.
Is CVE-2026-64279 being exploited?
There is no known exploitation of CVE-2026-64279 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-93816, BELL-CVE-2026-64279, DEBIAN-CVE-2026-64279, GHSA-q5pg-jgvg-gf28, ROOT-OS-DEBIAN-12-CVE-2026-64279, ROOT-OS-UBUNTU-2204-CVE-2026-64279 and 1 more.