CVE-2025-68804 platform/chrome: cros_ec_ishtp: Fix UAF after unbinding driver
A use-after-free vulnerability in the Linux kernel Chrome OS EC ISHTP driver allows local attackers to cause a system crash by unbinding the driver while a work thread is active.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-68804?
CVE-2025-68804 is an use after free vulnerability in Linux, published on 13 Jan 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:
platform/chrome: cros_ec_ishtp: Fix UAF after unbinding driver
After unbinding the driver, another kthread `cros_ec_console_log_work` is still accessing the device, resulting an UAF and crash.
The driver doesn't unregister the EC device in .remove() which should shutdown sub-devices synchronously. Fix it.
Which versions are affected by CVE-2025-68804?
How do I fix CVE-2025-68804?
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-2025-68804 being exploited?
There is no known exploitation of CVE-2025-68804 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68804, DEBIAN-CVE-2025-68804, GHSA-hf3h-7r2q-pcgc, ROOT-OS-DEBIAN-11-CVE-2025-68804, ROOT-OS-DEBIAN-12-CVE-2025-68804, ROOT-OS-DEBIAN-13-CVE-2025-68804 and 3 more.