CVE-2026-23475

Description

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

• https://git.kernel.org/stable/c/118ce777d39f03cac99231196f820e4f998613a8
• https://git.kernel.org/stable/c/378b295f67102eef78cf2c28105f60ae1dab5cc1
• https://git.kernel.org/stable/c/80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e
• https://git.kernel.org/stable/c/dee0774bbb2abb172e9069ce5ffef579b12b3ae9
• https://git.kernel.org/stable/c/df30056c78e8bead02d4be020199cabdbec0fef1