In the Linux kernel, the following vulnerability has been resolved: USB: 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.
https://git.kernel.org/stable/c/cc00340fb1226a2a3a5cf15473ac417da3c952f1
https://git.kernel.org/stable/c/c68ece7baf2aa9783b8244482c03010d477d4a93
https://git.kernel.org/stable/c/6683327b51a601daba32900072349dfa1d4e8fea
https://git.kernel.org/stable/c/30374434edab20e25776f8ecb4bc9d1e54309487