CVE-2025-38428 Input: ims-pcu - check record size in ims_pcu_flash_firmware()
A missing size check in the Linux kernel ims-pcu driver allows memory corruption via crafted firmware, 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-2025-38428?
CVE-2025-38428 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 25 Jul 2025. 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:
Input: ims-pcu - check record size in ims_pcu_flash_firmware()
The "len" variable comes from the firmware and we generally do trust firmware, but it's always better to double check. If the "len" is too large it could result in memory corruption when we do "memcpy(fragment->data, rec->data, len);"
Weakness: CWE-787
Which versions are affected by CVE-2025-38428?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38428?
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-2025-38428 being exploited?
There is no known exploitation of CVE-2025-38428 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2025-38428, DEBIAN-CVE-2025-38428, GHSA-733g-xvvm-2g6j, ROOT-OS-DEBIAN-11-CVE-2025-38428, ROOT-OS-DEBIAN-12-CVE-2025-38428, ROOT-OS-UBUNTU-2204-CVE-2025-38428 and 2 more.