staging: pi433: fix memory leak with using debugfs_lookup()
CVE-2023-53355 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53355, released September 17, 2025. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.20-1 | DEBIAN-CVE-2023-53355 | Sep 17, 2025 |
| linux · Debian 13.5 (trixie) | 6.1.20-1 | DEBIAN-CVE-2023-53355 | Sep 17, 2025 |
| linux · Debian 14 | 6.1.20-1 | DEBIAN-CVE-2023-53355 | Sep 17, 2025 |
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