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Change History

In the Linux kernel, the following vulnerability has been resolved:

sched/debug: fix dentry leak in update_sched_domain_debugfs

Kuyo reports that the pattern of using debugfs_remove(debugfs_lookup())
leaks a dentry and with a hotplug stress test, the machine eventually
runs out of memory.

Fix this up by using the newly created debugfs_lookup_and_remove() call
instead which properly handles the dentry reference counting logic.

kernel.org https://git.kernel.org/stable/c/0c32a93963e03c03e561d5a066eedad211880ba3 [No types assigned]

kernel.org https://git.kernel.org/stable/c/26e9a1ded8923510e5529fbb28390b22228700c2 [No types assigned]

kernel.org https://git.kernel.org/stable/c/c2e406596571659451f4b95e37ddfd5a8ef1d0dc [No types assigned]