What’s Vulnerable › Vulnerabilities

CVE-2023-52936: kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-27 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.

Affected products

• Linux kernel: before 5.15.93; from 5.16 before 6.1.11; 6.2-rc1, 6.2-rc2, 6.2-rc3, 6.2-rc4, 6.2-rc5, 6.2-rc6 — fixed in 5.15.93, 6.1.11

How to fix

Upgrade to a fixed version: Linux kernel 5.15.93, 6.1.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/066ecbf1a53eb0b92b10c8df7808666be6ea5681
• https://git.kernel.org/stable/c/cf1c917bf1c761a557b26410024e90057646c049
• https://git.kernel.org/stable/c/d83d7ed260283560700d4034a80baad46620481b

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