CVE-2024-26705 Information

Description

In the Linux kernel the following vulnerability has been resolved:

parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

When using hotplug and bringing up a 32-bit CPU ask the firmware about the BTLB information to set up the static (block) TLB entries.

For that write access to the static btlb_info struct is needed but since it is marked __ro_after_init the kernel segfaults with missing write permissions.

Fix the crash by dropping the __ro_after_init annotation.

Reference

https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486