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CVE-2023-53202: PM: domains: fix memory leak with using debugfs_lookup()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: PM: domains: 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: from 5.11 before 5.15.99; from 5.16 before 6.1.16; from 6.2 before 6.2.3 — fixed in 5.15.99, 6.1.16, 6.2.3

How to fix

Upgrade to a fixed version: Linux kernel 5.15.99, 6.1.16, 6.2.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0b6200e1e9f53dabdc30d0f6c51af9a5f664d32b
• https://git.kernel.org/stable/c/543d7113c37206ed7dae7bfb0b7e50955077770e
• https://git.kernel.org/stable/c/cde67cb7d2d1757baa83271c1f0892727e79f52e
• https://git.kernel.org/stable/c/dddc132eb0dca3969f9146ef8feac0aa542aa305

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