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

bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()

In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to
fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in
fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io
triggers KASAN use-after-free. To avoid the use-after-free, keep the
reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to
fsl_destroy_mc_io().

This patch needs rework to apply to kernels older than v5.15.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-49711
• https://git.kernel.org/stable/c/161b68b0a728377aaa10a8e14c70e7734f3c9ff7
• https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9
• https://git.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963