CVE-2026-90249

Description

In the Linux kernel, the following vulnerability has been resolved: iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes The IIO core does not filter duplicate writes to the event enable attribute, so writing the same value twice invokes write_event_config() twice. Enabling twice leaks a runtime PM reference, preventing the device from ever suspending again; disabling twice underflows the usage count and triggers a "Runtime PM usage count underflow" warning. Bail out early when the requested state matches the current state. While at it, switch to pm_runtime_resume_and_get() so a failed resume is propagated to userspace instead of silently marking the event enabled.

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References

Other References

https://git.kernel.org/stable/c/0fc740c25c9abb25113398ebb58e2f2ce57741a7 https://git.kernel.org/stable/c/470edb012b1d9a4fba1cd59e329e60f0798c791a https://git.kernel.org/stable/c/56fe8e5f313a64e458bb6f8b982de925345e21a7 https://git.kernel.org/stable/c/579c049b4cb6fc72ce2c505fc5334540be0efcd3 https://git.kernel.org/stable/c/685d9d1e5c47e024413981fb7eddab86132b04a1 https://git.kernel.org/stable/c/70b9482926ca92862460e659f5e5fde99ae0b4fa https://git.kernel.org/stable/c/8e76ab81319858736ccf23141e9415f9a1869337 https://git.kernel.org/stable/c/b2d7a97d75b648a643f60d77f4d6d70161268855

Frequently Asked Questions

What is CVE-2026-90249? +

In the Linux kernel, the following vulnerability has been resolved: iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes The IIO core does not filter duplicate writes to the event enable attribute, so writing the same value twice invokes write_event_config() twice. Enabling twice leaks a runtime PM reference, preventing the device from ever suspending again; disabling twice underflows the usage count and triggers a "Runtime PM usage count underflow" warning. Bail out early when the requested state matches the current state. While at it, switch to pm_runtime_resume_and_get() so a failed resume is propagated to userspace instead of silently marking the event enabled.

How do I check if I'm vulnerable to CVE-2026-90249? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-90249

Description

References

Other References

Frequently Asked Questions

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