CVE-2024-44931: gpio: prevent potential speculation leaks in gpio_device_get_desc()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-26 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: gpio: prevent potential speculation leaks in gpio_device_get_desc() Userspace may trigger a speculative read of an address outside the gpio descriptor array. Users can do that by calling gpio_ioctl() with an offset out of range. Offset is copied from user and then used as an array index to get the gpio descriptor without sanitization in gpio_device_get_desc(). This change ensures that the offset is sanitized by using array_index_nospec() to mitigate any possibility of speculative information leaks. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.

Affected products

Linux kernel: before 6.6.46; from 6.7 before 6.10.5 — fixed in 6.10.5, 6.6.46

How to fix

Upgrade to a fixed version: Linux kernel 6.10.5, 6.6.46. Check the vendor advisory for mitigations.

References

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