CVE-2024-42087

What it actually does

The ilitek-ili9881c panel driver called gpiod_set_value() on the reset GPIO instead of gpiod_set_value_cansleep(), producing warnings when the underlying GPIO controller requires sleeping.

Why it matters to the business

Produces noisy kernel warnings on affected Linux systems using compatible display panels; minimal operational disruption given low exploitability and absence from known campaigns.

How an attack unfolds

No practical exploitation path exists; the issue is a non-security API misuse that only surfaces as a runtime warning rather than memory corruption or privilege escalation.

How to fix it

Update the Linux kernel to a version containing commit b71348be1236398be2d04c5e145fd6eaae86a91b in the drm/panel ilitek-ili9881c driver.

How to confirm the fix worked

Confirm the driver source uses gpiod_set_value_cansleep() for the reset GPIO and verify the running kernel includes the referenced commit or later equivalent stable backport.

How to detect it

Review kernel dmesg or syslog for gpiod_set_value warnings referencing ili9881c; no post-exploitation artifacts are expected.

What your security team should do

• Apply the referenced kernel commit or subsequent stable release containing the fix
• Monitor kernel logs for gpiod warnings on systems with ILI9881C panels until patched