CVE-2026-64342 USB: iowarrior: fix use-after-free on disconnect
A use-after-free vulnerability in the Linux kernel iowarrior USB driver allows attackers to execute arbitrary code or escalate privileges via crafted USB disconnect events.
- 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-2026-64342?
CVE-2026-64342 is a high-severity use after free 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:
USB: iowarrior: fix use-after-free on disconnect
Submitted write URBs are not stopped on close() and therefore need to be stopped unconditionally on disconnect() to avoid use-after-free in the completion handler.
Weakness: CWE-416
Which versions are affected by CVE-2026-64342?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64342?
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-2026-64342 being exploited?
There is no known exploitation of CVE-2026-64342 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-64342, DEBIAN-CVE-2026-64342, GHSA-9px5-jvx8-8qgx, ROOT-OS-UBUNTU-2204-CVE-2026-64342, UBUNTU-CVE-2026-64342.