Description

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.

References 4

• git.kernel.org https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753
• git.kernel.org https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0
• git.kernel.org https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136
• git.kernel.org https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a

Remediation