CVE-2025-39676 scsi: qla4xxx: Prevent a potential error pointer dereference

Medium 5.5 Published Updated

A potential error pointer dereference in the qla4xxx SCSI driver can cause a kernel Oops, leading to denial of service.

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-2025-39676?

CVE-2025-39676 is a medium-severity vulnerability in Debian Debian Linux, published on 5 Sep 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: qla4xxx: Prevent a potential error pointer dereference

The qla4xxx_get_ep_fwdb() function is supposed to return NULL on error, but qla4xxx_ep_connect() returns error pointers. Propagating the error pointers will lead to an Oops in the caller, so change the error pointers to NULL.

Weakness: CWE-476

Which versions are affected by CVE-2025-39676?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2025-39676?

Apply the vendor's patch.

Is CVE-2025-39676 being exploited?

There is no known exploitation of CVE-2025-39676 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as AZL-67034, AZL-73653, BELL-CVE-2025-39676, DEBIAN-CVE-2025-39676, GHSA-2m84-5929-4fcx, ROOT-OS-DEBIAN-11-CVE-2025-39676 and 5 more.

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