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CVE-2026-90249— iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： iio: light: gp2ap002: 修复因重复写入事件导致的运行时电源管理（runtime PM）引用计数不平衡问题 IIO 核心并未对事件启用属性（event enable attribute）的重复写入进行过滤，因此两次写入相同的值会两次调用 write_event_config() 函数。若两次启用操作会导致运行时电源管理引用计数泄漏，使设备永远无法再次挂起；而两次禁用操作则会导致使用计数（usage count）下溢，并触发“Runtime PM usage

AI Predicted 5.5 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1602.007

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 97d642e23037c5545266f9564c9b81e6db81b122< b2d7a97d75b648a643f60d77f4d6d70161268855 affected
97d642e23037c5545266f9564c9b81e6db81b122< 685d9d1e5c47e024413981fb7eddab86132b04a1 affected
97d642e23037c5545266f9564c9b81e6db81b122< 56fe8e5f313a64e458bb6f8b982de925345e21a7 affected
97d642e23037c5545266f9564c9b81e6db81b122< 8e76ab81319858736ccf23141e9415f9a1869337 affected
97d642e23037c5545266f9564c9b81e6db81b122< 70b9482926ca92862460e659f5e5fde99ae0b4fa affected
97d642e23037c5545266f9564c9b81e6db81b122< 0fc740c25c9abb25113398ebb58e2f2ce57741a7 affected
97d642e23037c5545266f9564c9b81e6db81b122< 470edb012b1d9a4fba1cd59e329e60f0798c791a affected
97d642e23037c5545266f9564c9b81e6db81b122< 579c049b4cb6fc72ce2c505fc5334540be0efcd3 affected
… +10 more rows
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I. Basic Information for CVE-2026-90249

Vulnerability Information
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Vulnerability Title
iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 97d642e23037c5545266f9564c9b81e6db81b122 ~ b2d7a97d75b648a643f60d77f4d6d70161268855 -
Linux Linux 5.7 -

II. Public POCs for CVE-2026-90249

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III. Intelligence Information for CVE-2026-90249

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Patches & Fixes for CVE-2026-90249 (6)

Other References for CVE-2026-90249 (2)

Same Patch Batch · Linux · 2026-09-17 · 602 CVEs total

CVE-2026-90257 Bluetooth: virtio_bt: avoid OOB read of build info string
CVE-2026-90238 media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
CVE-2026-90240 iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90239 media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
CVE-2026-90241 iommu/vt-d: Tear down scalable-mode context on probe failure
CVE-2026-90243 iommu/vt-d: Clear Present bit before tearing down copied context entry
CVE-2026-90242 iommu/vt-d: Fix iopf_refcount leak on RID domain replacement
CVE-2026-90244 iommu/dma: Restore locking around msi_page_list
CVE-2026-90245 fbdev: kyro: Validate overlay viewport coordinates
CVE-2026-90246 apparmor: fix integer overflow in verify_tags() bounds check
CVE-2026-90247 bpf: Fix mmap_lock leak in irq_work path
CVE-2026-90248 net/sched: cls_api: fix teardown of an adopted proto on insert-race loss
CVE-2026-90250 bpf, cgroup: Fix storage null-ptr-deref after replacing prog
CVE-2026-90251 Bluetooth: MSFT: validate evt_prefix_len against the response length
CVE-2026-90253 Bluetooth: MGMT: free the mesh send cancel command when it is cancelled
CVE-2026-90252 Bluetooth: MGMT: free the HCI command when it is cancelled
CVE-2026-90254 Bluetooth: hci_sync: free the advertising instance on the failure and cancel paths
CVE-2026-90256 Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90255 Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90267 scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails

Showing top 20 of 602 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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