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

mailbox: mailbox-test: don't free the reused channel

The RX channel can be aliased to the TX channel if it has a different
MMIO. This special case needs to be handled when freeing the channels
otherwise a double-free occurs.

https://git.kernel.org/stable/c/240c71a2aea36a1a4210f911a1c32ea88777e8e4

https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0

https://git.kernel.org/stable/c/5c209299b0113e289e238fa5f2e8f00c59f76060

https://git.kernel.org/stable/c/5d4f3d0f64f1016cb78b400a70b67df91fac99b5

https://git.kernel.org/stable/c/82f6dcea46cf5de65c4ba7283f7c7b34de4a324d

https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473

https://git.kernel.org/stable/c/c494a11da45ad7ec9b0ff216c3e3ace351193bb6

https://git.kernel.org/stable/c/fc0089f82c3e36060c2c79156bc2018bfb16b56b

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