CVE-2025-37825 nvmet: fix out-of-bounds access in nvmet_enable_port
An out-of-bounds read in the Linux kernel NVMe target driver can cause a system crash when enabling a port without a configured transport.
- 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-2025-37825?
CVE-2025-37825 is a high-severity memory corruption vulnerability in Linux kernel, published on 8 May 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:
nvmet: fix out-of-bounds access in nvmet_enable_port
When trying to enable a port that has no transport configured yet, nvmet_enable_port() uses NVMF_TRTYPE_MAX (255) to query the transports array, causing an out-of-bounds access:
[ 106.058694] BUG: KASAN: global-out-of-bounds in nvmet_enable_port+0x42/0x1da [ 106.058719] Read of size 8 at addr ffffffff89dafa58 by task ln/632 [...] [ 106.076026] nvmet: transport type 255 not supported
Since commit 200adac75888, NVMF_TRTYPE_MAX is the default state as configured by nvmet_ports_make(). Avoid this by checking for NVMF_TRTYPE_MAX before proceeding.
Weakness: CWE-125
Which versions are affected by CVE-2025-37825?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-37825?
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-2025-37825 being exploited?
There is no known exploitation of CVE-2025-37825 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-37825, GHSA-mcjv-6q8c-83q6, ROOT-OS-DEBIAN-13-CVE-2025-37825, UBUNTU-CVE-2025-37825.