CVE-2026-72074 Input: ims-pcu - fix type confusion in CDC union descriptor parsing
A type confusion flaw in the Linux kernel's ims-pcu driver allows local attackers to overwrite interface data, potentially leading to privilege escalation or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-72074?
CVE-2026-72074 is a memory corruption vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In the Linux kernel, the following vulnerability has been resolved:
Input: ims-pcu - fix type confusion in CDC union descriptor parsing
The driver currently trusts the bMasterInterface0 from the CDC union descriptor without verifying that it matches the interface being probed. This could lead to the driver overwriting the private data of another interface.
Validate that the control interface found in the descriptor is indeed the one we are probing.
Which versions are affected by CVE-2026-72074?
How do I fix CVE-2026-72074?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-72074 being exploited?
There is no known exploitation of CVE-2026-72074 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72074, DEBIAN-CVE-2026-72074, GHSA-cgj5-87r8-p5m2, UBUNTU-CVE-2026-72074.