CVE-2023-54102 scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow
A local attacker with debugfs access can trigger a buffer overflow in the lpfc SCSI driver, potentially leading to privilege escalation or 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-2023-54102?
CVE-2023-54102 is a memory corruption vulnerability in Linux, published on 24 Dec 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:
scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow
A static code analysis tool flagged the possibility of buffer overflow when using copy_from_user() for a debugfs entry.
Currently, it is possible that copy_from_user() copies more bytes than what would fit in the mybuf char array. Add a min() restriction check between sizeof(mybuf) - 1 and nbytes passed from the userspace buffer to protect against buffer overflow.
Which versions are affected by CVE-2023-54102?
How do I fix CVE-2023-54102?
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-2023-54102 being exploited?
There is no known exploitation of CVE-2023-54102 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54102, DEBIAN-CVE-2023-54102, GHSA-hpjg-jc89-xqgf, UBUNTU-CVE-2023-54102.