In the Linux kernel, the following vulnerability has been resolved: regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving… (CVE-2026-89504)
A vulnerability in the Linux kernel's regulator driver for as3722 was resolved. The issue involved a premature release of a device tree node reference, resulting in a dangling pointer. This was caused by calling of_node_put() immediately after assigning the node pointer, which released the reference while it was still in use. The fix removes the premature of_node_put() call to maintain a valid reference.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's as3722 regulator driver was due to improper reference management of device tree nodes. Specifically, in the function as3722_get_regulator_dt_data(), the call to of_get_child_by_name() acquires a reference on a device tree node pointer (np), which is assigned to pdev->dev.of_node. However, the function then immediately calls of_node_put(np), releasing the reference and leaving pdev->dev.of_node as a dangling pointer. The fix involves removing the premature of_node_put(np) call so that the device retains the reference properly.
Potential Impact
The dangling pointer caused by premature release of the device tree node reference could lead to undefined behavior in the kernel, such as use-after-free conditions. This may result in system instability or potential kernel crashes. No specific exploit or active attacks are reported.
Mitigation Recommendations
A fix has been implemented by removing the premature of_node_put() call in the affected function. Users should apply the updated Linux kernel version containing this fix once available. Patch status is not explicitly stated; check the vendor or Linux kernel advisories for the official patch and update guidance.
In the Linux kernel, the following vulnerability has been resolved: regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving… (CVE-2026-89504)
Description
A vulnerability in the Linux kernel's regulator driver for as3722 was resolved. The issue involved a premature release of a device tree node reference, resulting in a dangling pointer. This was caused by calling of_node_put() immediately after assigning the node pointer, which released the reference while it was still in use. The fix removes the premature of_node_put() call to maintain a valid reference.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's as3722 regulator driver was due to improper reference management of device tree nodes. Specifically, in the function as3722_get_regulator_dt_data(), the call to of_get_child_by_name() acquires a reference on a device tree node pointer (np), which is assigned to pdev->dev.of_node. However, the function then immediately calls of_node_put(np), releasing the reference and leaving pdev->dev.of_node as a dangling pointer. The fix involves removing the premature of_node_put(np) call so that the device retains the reference properly.
Potential Impact
The dangling pointer caused by premature release of the device tree node reference could lead to undefined behavior in the kernel, such as use-after-free conditions. This may result in system instability or potential kernel crashes. No specific exploit or active attacks are reported.
Mitigation Recommendations
A fix has been implemented by removing the premature of_node_put() call in the affected function. Users should apply the updated Linux kernel version containing this fix once available. Patch status is not explicitly stated; check the vendor or Linux kernel advisories for the official patch and update guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w8c6-qh9v-m8g2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-89504"]
Threat ID: 6aa4a01655bf5e2cf5a866e5
Added to database: 09/12/2026, 00:43:02 UTC
Last enriched: 09/12/2026, 01:11:56 UTC
Last updated: 09/12/2026, 01:11:56 UTC
Views: 2
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