CVE-2026-23123
Unknown Unknown - Not Provided
Uninitialized Pointer Vulnerability in Linux Kernel debugfs Component

Publication date: 2026-02-14

Last updated on: 2026-03-18

Assigner: kernel.org

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.
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Meta Information
Published
2026-02-14
Last Modified
2026-03-18
Generated
2026-06-16
AI Q&A
2026-02-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-23123
EUVD
EUVD-2026-5913
Affected Vendors & Products
Showing 9 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.7 (inc) to 6.12.68 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.8 (exc)
linux linux_kernel 6.19
linux linux_kernel From 6.6 (inc) to 6.6.122 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-908 The product uses or accesses a resource that has not been initialized.
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Executive Summary

This vulnerability exists in the Linux kernel's interconnect debugfs component. The issue arises because the variables src_node and dst_node were left uninitialized before being used in the debugfs_create_str() API. This API expects the string pointer to be either NULL or point to valid kmalloc() memory. If the pointer is uninitialized, it can cause problems during reads and writes.

The fix involved initializing src_node and dst_node to empty strings before creating the debugfs entries, ensuring that any reads or writes to these entries are safe.

Impact Analysis

If the src_node and dst_node pointers are uninitialized, it can lead to unsafe reads and writes in the debugfs interface of the Linux kernel. This could potentially cause system instability, crashes, or unexpected behavior when interacting with the debugfs entries related to interconnect.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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