CVE-2026-90249
iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
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.
INFO
Published Date :
Sept. 17, 2026, 5:17 p.m.
Last Modified :
Sept. 17, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Check for duplicate writes to event attributes.
- Bail out early if the requested state matches the current state.
- Use pm_runtime_resume_and_get for failed resume propagation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-90249.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-90249 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-90249
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-90249 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-90249 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 17, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90249.json">CVE-2026-90249</a> Added Reference https://git.kernel.org/stable/c/0fc740c25c9abb25113398ebb58e2f2ce57741a7 Added Reference https://git.kernel.org/stable/c/470edb012b1d9a4fba1cd59e329e60f0798c791a Added Reference https://git.kernel.org/stable/c/56fe8e5f313a64e458bb6f8b982de925345e21a7 Added Reference https://git.kernel.org/stable/c/579c049b4cb6fc72ce2c505fc5334540be0efcd3 Added Reference https://git.kernel.org/stable/c/685d9d1e5c47e024413981fb7eddab86132b04a1 Added Reference https://git.kernel.org/stable/c/70b9482926ca92862460e659f5e5fde99ae0b4fa Added Reference https://git.kernel.org/stable/c/8e76ab81319858736ccf23141e9415f9a1869337 Added Reference https://git.kernel.org/stable/c/b2d7a97d75b648a643f60d77f4d6d70161268855