What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-14 · updated 2026-06-17
• Weakness: CWE-908

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.

Affected products

• Linux kernel: from 6.6 before 6.6.122; from 6.7 before 6.12.68; from 6.13 before 6.18.8; 6.19-rc1, 6.19-rc2, 6.19-rc3, 6.19-rc4, 6.19-rc5, 6.19-rc6 — fixed in 6.12.68, 6.18.8, 6.6.122

How to fix

Upgrade to a fixed version: Linux kernel 6.12.68, 6.18.8, 6.6.122. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/5d7c7e1fb3ec24fdd0f9faa27b666d6789e891e8
• https://git.kernel.org/stable/c/8cc27f5c6dd17dd090f3a696683f04336c162ff5
• https://git.kernel.org/stable/c/935d0938b570589c8b0a1733d2cba3c39d027f25
• https://git.kernel.org/stable/c/aa79a5a959c7c414bd6fba01ea8dbaddd44f13e7

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