CVE-2026-23365 net: usb: kalmia: validate USB endpoints
A malicious USB device can cause a kernel crash in the kalmia driver by providing unexpected endpoints, 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-2026-23365?
CVE-2026-23365 is a medium-severity vulnerability in Linux kernel, published on 25 Mar 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:
net: usb: kalmia: validate USB endpoints
The kalmia driver should validate that the device it is probing has the proper number and types of USB endpoints it is expecting before it binds to it. If a malicious device were to not have the same urbs the driver will crash later on when it blindly accesses these endpoints.
Which versions are affected by CVE-2026-23365?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23365?
Apply the vendor's patch.
Is CVE-2026-23365 being exploited?
There is no known exploitation of CVE-2026-23365 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-80751, BELL-CVE-2026-23365, DEBIAN-CVE-2026-23365, GHSA-m58v-8vcf-j347, ROOT-OS-DEBIAN-11-CVE-2026-23365, ROOT-OS-DEBIAN-12-CVE-2026-23365 and 4 more.