CVE-2025-38088 powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap
An out-of-bounds memory access in the Linux kernel's PowerPC memtrace module allows attackers to potentially execute code or cause a system crash.
- 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-2025-38088?
CVE-2025-38088 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 30 Jun 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:
powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap
memtrace mmap issue has an out of bounds issue. This patch fixes the by checking that the requested mapping region size should stay within the allocated region size.
Weakness: CWE-125
Which versions are affected by CVE-2025-38088?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38088?
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-2025-38088 being exploited?
There is no known exploitation of CVE-2025-38088 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2025-38088, DEBIAN-CVE-2025-38088, GHSA-96p2-88jx-5jfm, ROOT-OS-DEBIAN-12-CVE-2025-38088, ROOT-OS-UBUNTU-2204-CVE-2025-38088, ROOT-OS-UBUNTU-2404-CVE-2025-38088 and 1 more.