CVE-2026-23123 interconnect: debugfs: initialize src_node and dst_node to empty strings

What is CVE-2026-23123?

CVE-2026-23123 is a medium-severity vulnerability in Linux kernel, published on 14 Feb 2026. 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:

interconnect: debugfs: initialize src_node and dst_node to empty strings

The debugfs_create_str() API assumes that the string pointer is either NULL or points to valid kmalloc() memory. Leaving the pointer uninitialized can cause problems.

Initialize src_node and dst_node to empty strings before creating the debugfs entries to guarantee that reads and writes are safe.

Weakness: CWE-908

Which versions are affected by CVE-2026-23123?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-23123?

Apply the vendor's patch.

Is CVE-2026-23123 being exploited?

There is no known exploitation of CVE-2026-23123 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-77763, BELL-CVE-2026-23123, DEBIAN-CVE-2026-23123, GHSA-x5p5-6q7q-gj33, ROOT-OS-UBUNTU-2404-CVE-2026-23123, UBUNTU-CVE-2026-23123.