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CVE-2026-23475

spi: fix statistics allocation

Published: 4/3/2026 Last updated: 5/11/2026 Reserved: 1/13/2026

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).

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (4)

Product Vendor Version
Linux Linux EMC PowerPath Virtual (Management) Appliance EMC PowerPath Virtual (Management) Appliance 2.0, EMC PowerPath Virtual (Management) Appliance 2.0 SP1
Linux Linux n/a
Linux Linux x64-based Systems Service Pack 1
Linux Linux x64-based Systems Service Pack 1 (Server Core installation)

References (12)