CVE-2026-23475
Published: April 4, 2026Last modified: April 9, 2026
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).
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.80-r0) |
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
- https://git.kernel.org/stable/c/f13100b1f5f111989f0750540a795fdef47492af