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Change History

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

md/raid1: fix memory leak in raid1_run()

raid1_run() calls setup_conf() which registers a thread via
md_register_thread(). If raid1_set_limits() fails, the previously
registered thread is not unregistered, resulting in a memory leak
of the md_thread structure and the thread resource itself.

Add md_unregister_thread() to the error path to properly cleanup
the thread, which aligns with the error handling logic of other paths
in this function.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753

https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0

https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136

https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a