In the Linux kernel, the following vulnerability has been resolved:
spi: fix statistics allocation
The controller per-cpu statistics is not allocated until after the
controller has been registered with driver core, which leaves a window
where accessing the sysfs attributes can trigger a NULL-pointer
dereference.
Fix this by moving the statistics allocation to controller allocation
while tying its lifetime to that of the controller (rather than using
implicit devres).
References 6
https://git.kernel.org/stable/c/118ce777d39f03cac99231196f820e4f998613a8
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/378b295f67102eef78cf2c28105f60ae1dab5cc1
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dee0774bbb2abb172e9069ce5ffef579b12b3ae9
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/df30056c78e8bead02d4be020199cabdbec0fef1
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f13100b1f5f111989f0750540a795fdef47492af
416baaa9-dc9f-4396-8d5f-8c081fb06d67