CVE-2026-89504 - Vulnerability Details

- regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer

Description

In the Linux kernel, the following vulnerability has been resolved:

regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer

In as3722_get_regulator_dt_data(), of_get_child_by_name() acquires a
reference on np, which is then assigned to pdev->dev.of_node. The
function immediately calls of_node_put(np), releasing the reference and
leaving pdev->dev.of_node as a dangling pointer.

Remove the of_node_put(np) call to let the device hold the reference.

Published: 2026-09-11

Score: 8.4 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

In Linux kernel, the as3722 regulator driver incorrectly invoked an of_node_put on a child node reference that was then stored in pdev->dev.of_node. This caused the stored pointer to become dangling, creating a use‑after‑free condition (CWE‑825).

Affected Systems

The affected product is the Linux kernel; all kernel versions that include the as3722 regulator driver could be impacted until the patch is applied.

Risk and Exploitability

With a CVSS score of 4.1 and EPSS score of < 1%, the vulnerability is considered moderate with a very low probability of exploitation. It is not listed in the CISA KEV catalog. The vulnerability an early of_node_put; it is inferred that an attacker who can trigger the as3722 driver initialization could cause a kernel crash or denial of service. The attack vector is likely local, requiring interaction with the device during system boot or through a device tree that loads the regulator driver, but this is inferred from the description rather than explicitly documented.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`bc407334e9a6a745de5360395282beb2690adf48`	affected	< d3c1316d84e0a036890b00ae6e4c0b0b80f70c25
`bc407334e9a6a745de5360395282beb2690adf48`	affected	< 95342d26f9c6b68a46ab57fa48428a3c4a423dd7
`bc407334e9a6a745de5360395282beb2690adf48`	affected	< 8648e29e5c01b6b677c704049189287e27255ccb
`bc407334e9a6a745de5360395282beb2690adf48`	affected	< f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c

Linux

affected

Version	Status	Constraints
`3.13`	affected	—
`0`	unaffected	< 3.13
`6.12.109`	unaffected	≤ 6.12.*
`6.18.50`	unaffected	≤ 6.18.*
`7.2.4`	unaffected	≤ 7.2.*
`7.3-rc1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[bc407334e9a6a745de5360395282beb2690adf48,d3c1316d84e0a036890b00ae6e4c0b0b80f70c25)`	affected	code_commit	—
`[bc407334e9a6a745de5360395282beb2690adf48,95342d26f9c6b68a46ab57fa48428a3c4a423dd7)`	affected	code_commit	—
`[bc407334e9a6a745de5360395282beb2690adf48,8648e29e5c01b6b677c704049189287e27255ccb)`	affected	code_commit	—
`[bc407334e9a6a745de5360395282beb2690adf48,f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`3.13`	affected	generic	—
`[0,3.13)`	unaffected	generic	—
`[6.12.109,6.13.0)`	unaffected	semver	—
`[6.18.50,6.19.0)`	unaffected	semver	—
`[7.2.4,7.3.0)`	unaffected	semver	—
`[7.3-rc1,*]`	unaffected	semver	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Apply the latest Linux kernel update that includes the commit removing the premature of_node_put in as3722_get_regulator_dt_data, as documented in commit 8648e29e5c01b6b677c704049189287e27255ccb.
Reboot the system to load the updated kernel.
If an immediate kernel upgrade is not possible, temporarily disable the as3722 regulator device in the device tree until the patch can be applied.

Generated by OpenCVE AI on September 13, 2026 at 07:02 UTC.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00168.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb
https://git.kernel.org/stable/c/95342d26f9c6b68a46ab57fa48428a3c4a423dd7
https://git.kernel.org/stable/c/d3c1316d84e0a036890b00ae6e4c0b0b80f70c25
https://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c
https://nvd.nist.gov/vuln/detail/CVE-2026-89504
https://www.cve.org/CVERecord?id=CVE-2026-89504

History

Sun, 13 Sep 2026 06:45:00 +0000

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 4.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'}`	cvssV3_1 `{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}`

Sat, 12 Sep 2026 00:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-825
References		https://nvd.nist.gov/vuln/detail/CVE-2026-89504 https://www.cve.org/CVERecord?id=CVE-2026-89504
Metrics	threat_severity `None`	cvssV3_1 `{'score': 4.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Fri, 11 Sep 2026 23:45:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer In as3722_get_regulator_dt_data(), of_get_child_by_name() acquires a reference on np, which is then assigned to pdev->dev.of_node. The function immediately calls of_node_put(np), releasing the reference and leaving pdev->dev.of_node as a dangling pointer. Remove the of_node_put(np) call to let the device hold the reference.
Title		regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb https://git.kernel.org/stable/c/95342d26f9c6b68a46ab57fa48428a3c4a423dd7 https://git.kernel.org/stable/c/d3c1316d84e0a036890b00ae6e4c0b0b80f70c25 https://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-09-11T19:43:52.024Z

Updated: 2026-09-13T06:30:11.096Z

Reserved: 2026-09-11T19:38:34.715Z

Link: CVE-2026-89504

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-11T20:19:32.673

Modified: 2026-09-13T07:17:13.573

Link: CVE-2026-89504

Redhat

Severity : Moderate

Publid Date: 2026-09-11T19:43:52Z

Links: CVE-2026-89504 - Bugzilla

OpenCVE Enrichment

Updated: 2026-09-13T07:15:17Z

Weaknesses

CWE-825
Expired Pointer Dereference

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Subscriptions

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