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

mailbox: add sanity check for channel array

Fail gracefully if there is no channel array attached to the mailbox
controller. Otherwise the later dereference will cause an OOPS which
might not be seen because mailbox controllers might instantiate very
early. Remove the comment explaining the obvious while here.

https://git.kernel.org/stable/c/0f11444271110d9b5bc6316a153c6431abda899c

https://git.kernel.org/stable/c/14aed0d4e58389cc6a88acf8610b12d3e476272b

https://git.kernel.org/stable/c/37792091ab28ba030fd8d61184c47d4d51294170

https://git.kernel.org/stable/c/5cc3300fab262b26c28bc2fc06df693410c3840b

https://git.kernel.org/stable/c/6362c4a7d7e21e68cd9aa04df7cde16befba3a4b

https://git.kernel.org/stable/c/9dd7489943324298bb0f385495795a82f1dd6507

https://git.kernel.org/stable/c/c1aad75595fb67edc7fda8af249d3b886efa1be9

https://git.kernel.org/stable/c/d44872a569b8fbacde457ff2587a775e5004bb79

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