CVE-2026-68374 usb: core: sysfs: add lock to bos_descriptors_read()
A race condition in the Linux kernel USB core allows attackers to trigger a use-after-free, potentially leading to code execution or 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-2026-68374?
CVE-2026-68374 is a high-severity use after free vulnerability in Linux, published on 10 Aug 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:
usb: core: sysfs: add lock to bos_descriptors_read()
Add a lock to the function bos_descriptors_read().
This function accesses udev->bos, which could be simultaneously freed in usb_reset_and_verify_device(), a function that is commonly called in drivers all over the kernel.
Weakness: CWE-416
Which versions are affected by CVE-2026-68374?
How do I fix CVE-2026-68374?
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-2026-68374 being exploited?
There is no known exploitation of CVE-2026-68374 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68374, DEBIAN-CVE-2026-68374, GHSA-hh3m-2ww4-7gxq, UBUNTU-CVE-2026-68374.