CVE-2023-53404: 
Linux Kernel vulnerability analysis and mitigation

CVE-2023-53404 is a memory leak vulnerability in the Linux kernel's USB fotg210 driver. The issue was discovered and reported on September 18, 2025, affecting the debugfs_lookup() function. When calling debugfs_lookup(), the result must have dput() called on it to prevent memory leakage over time (NVD).

The vulnerability occurs in the USB fotg210 driver implementation where the debugfs_lookup() function is called without properly managing memory resources. The issue stems from not calling dput() on the lookup result, which causes memory to leak gradually over time. The fix involves replacing the debugfs_lookup() call with debugfs_lookup_and_remove() which handles all the required logic in a single operation (NVD).

The vulnerability results in a memory leak that gradually consumes system resources over time. While not immediately critical, prolonged exploitation could lead to degraded system performance and potential resource exhaustion (NVD).

The issue has been resolved by replacing the debugfs_lookup() call with debugfs_lookup_and_remove(), which properly handles the memory management in a single operation. Users should update their Linux kernel to a version containing this fix (NVD).