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CVE-2026-23475

spi: fix statistics allocation

EPSS 0.1%
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).
Affected products
Linux · Linux

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References
https://git.kernel.org/stable/c/118ce777d39f03cac99231196f820e4f998613a8https://git.kernel.org/stable/c/378b295f67102eef78cf2c28105f60ae1dab5cc1https://git.kernel.org/stable/c/80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4ehttps://git.kernel.org/stable/c/dee0774bbb2abb172e9069ce5ffef579b12b3ae9https://git.kernel.org/stable/c/df30056c78e8bead02d4be020199cabdbec0fef1https://git.kernel.org/stable/c/f13100b1f5f111989f0750540a795fdef47492af