In the Linux kernel, the following vulnerability has been resolved: cpufreq: exit() callback is optional The exit() callback is optional and shouldn't be called without checking a valid pointer first. Also, we must clear freq_table pointer even if the exit() callback isn't present.
https://git.kernel.org/stable/c/dfc56ff5ec9904c008e9376d90a6d7e2d2bec4d3
https://git.kernel.org/stable/c/b8f85833c05730d631576008daaa34096bc7f3ce
https://git.kernel.org/stable/c/ae37ebca325097d773d7bb6ec069123b30772872
https://git.kernel.org/stable/c/a8204d1b6ff762d2171d365c2c8560285d0a233d
https://git.kernel.org/stable/c/8bc9546805e572ad101681437a49939f28777273
https://git.kernel.org/stable/c/3e99f060cfd2e36504d62c9132b453ade5027e1c
https://git.kernel.org/stable/c/35db5e76d5e9f752476df5fa0b9018a2398b0378
https://git.kernel.org/stable/c/2d730b465e377396d2a09a53524b96b111f7ccb6