CVE-2026-23475

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux6598b91b5ac32bc756d7c3000a31f775d4ead1c4 < 80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4eaffected
LinuxLinux6598b91b5ac32bc756d7c3000a31f775d4ead1c4 < f13100b1f5f111989f0750540a795fdef47492afaffected
LinuxLinux6598b91b5ac32bc756d7c3000a31f775d4ead1c4 < df30056c78e8bead02d4be020199cabdbec0fef1affected
LinuxLinux6598b91b5ac32bc756d7c3000a31f775d4ead1c4 < 378b295f67102eef78cf2c28105f60ae1dab5cc1affected
LinuxLinux6598b91b5ac32bc756d7c3000a31f775d4ead1c4 < 118ce777d39f03cac99231196f820e4f998613a8affected
LinuxLinux6598b91b5ac32bc756d7c3000a31f775d4ead1c4 < dee0774bbb2abb172e9069ce5ffef579b12b3ae9affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.167 <= 6.1.*unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.78 <= 6.12.*unaffected
LinuxLinux6.18.20 <= 6.18.*unaffected
LinuxLinux6.19.10 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References