What’s Vulnerable › Vulnerabilities

CVE-2023-53355: staging: pi433: 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: 2025-09-17 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: staging: pi433: 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. This requires saving off the root directory dentry to make creation of individual device subdirectories easier.

Affected products

• Linux kernel: from 4.14 before 6.1.18; from 6.2 before 6.2.5 — fixed in 6.1.18, 6.2.5

How to fix

Upgrade to a fixed version: Linux kernel 6.1.18, 6.2.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04f3cda40e9f6653ae15ed3fcf26ef2860f4df66
• https://git.kernel.org/stable/c/2f36e789e540df6a9fbf471b3a2ba62a8b361586
• https://git.kernel.org/stable/c/bb16f3102607b69e1a0233f4b73c6e337f86ef8d

Get alerted when CVE-2023-53355 or the next vulnerability affects your stack