A vulnerability in the Linux kernel's iio light sensor driver (bh1780) caused a power management runtime reference count leak on error paths. (CVE-2026-43355)
A vulnerability in the Linux kernel's iio light sensor driver (bh1780) caused a power management runtime reference count leak on error paths. The issue was fixed by moving the pm_runtime_put_autosuspend() call before the error check to ensure the reference count is decremented regardless of read operation success or failure.
AI Analysis
Technical Summary
The Linux kernel vulnerability CVE-2026-43355 involves a power management runtime leak in the iio light sensor driver bh1780. Specifically, the function pm_runtime_put_autosuspend() was called after an error check, which could cause the PM runtime reference count to remain incremented if a read operation failed. The fix moves this call before the error check, ensuring the reference count is always decremented after pm_runtime_get_sync(), preventing resource leaks.
Potential Impact
This vulnerability leads to a power management runtime reference count leak, which can cause resource exhaustion or degraded system power management behavior. There is no impact on confidentiality or integrity, but availability may be affected due to the leak.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue by correcting the order of pm_runtime_put_autosuspend() calls. Users should apply the official Linux kernel updates that include this fix when available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
A vulnerability in the Linux kernel's iio light sensor driver (bh1780) caused a power management runtime reference count leak on error paths. (CVE-2026-43355)
Description
A vulnerability in the Linux kernel's iio light sensor driver (bh1780) caused a power management runtime reference count leak on error paths. The issue was fixed by moving the pm_runtime_put_autosuspend() call before the error check to ensure the reference count is decremented regardless of read operation success or failure.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability CVE-2026-43355 involves a power management runtime leak in the iio light sensor driver bh1780. Specifically, the function pm_runtime_put_autosuspend() was called after an error check, which could cause the PM runtime reference count to remain incremented if a read operation failed. The fix moves this call before the error check, ensuring the reference count is always decremented after pm_runtime_get_sync(), preventing resource leaks.
Potential Impact
This vulnerability leads to a power management runtime reference count leak, which can cause resource exhaustion or degraded system power management behavior. There is no impact on confidentiality or integrity, but availability may be affected due to the leak.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue by correcting the order of pm_runtime_put_autosuspend() calls. Users should apply the official Linux kernel updates that include this fix when available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fg9p-q72c-pr97
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43355"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a498a7827e9c7971936f003
Added to database: 07/04/2026, 22:34:32 UTC
Last enriched: 07/04/2026, 23:07:03 UTC
Last updated: 07/31/2026, 19:24:49 UTC
Views: 27
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