CVE-2025-39690: iio: accel: sca3300: fix uninitialized iio scan data

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-05 · updated 2026-10-19
Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: iio: accel: sca3300: fix uninitialized iio scan data Fix potential leak of uninitialized stack data to userspace by ensuring that the `channels` array is zeroed before use.

Affected products

Linux kernel: from 6.16 before 6.16.4; 6.17-rc1, 6.17-rc2 — fixed in 6.16.4

How to fix

Upgrade to a fixed version: Linux kernel 6.16.4. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/4e5b705cc6147f0b9173c6219079f41416bdd3c0
https://git.kernel.org/stable/c/c88c04adb8611e436e1e773fd5db3f8d7397d089

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