Linux Kernel up to 6.12.109/6.18.50/7.2.4/7.3-rc1 qcom-pmic-typec port_stop improper synchronization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability marked as very critical has been reported in Linux Kernel up to 6.12.109/6.18.50/7.2.4/7.3-rc1. This issue affects the function port_stop of the component qcom-pmic-typec. This manipulation causes improper synchronization. This vulnerability is handled as CVE-2026-90027. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.109/6.18.50/7.2.4/7.3-rc1. It has been declared as very critical. Affected by this vulnerability is the function port_stop of the component qcom-pmic-typec. The manipulation with an unknown input leads to a improper synchronization vulnerability. The CWE definition for the vulnerability is CWE-662. The product utilizes multiple threads or processes to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop cc_debounce_dwork is queued from the set_cc() and start_toggling() callbacks, which run from TCPM's kthread worker. port_stop() returns before tcpm_unregister_port() destroys that worker. Flushing the worker during unregister may therefore run a callback which queues the delayed work after port_stop() has returned. The delayed work can then run after devres has freed pmic_typec_port. Use disable_delayed_work_sync() in port_stop() to cancel a pending instance and prevent the TCPM callbacks from queueing another one. This issue was found by an in-house static analysis tool.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-90027 since 09/11/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/16/2026).

Upgrading to version 6.12.110, 6.18.51, 7.2.5 or 7.3-rc2 eliminates this vulnerability. Applying the patch 4359b5f95c93a4658e08368fa6fab9d89eb98447/c614d7c44ca7fb78867ba46b233acdb59287e8c8/1ab669c2b44e1040ddfab7cd7f717aad580d17aa/263f7d61a4201cde16849b2d016251806e7418be is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper synchronization
CWE: CWE-662
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.110/6.18.51/7.2.5/7.3-rc2
Patch: 4359b5f95c93a4658e08368fa6fab9d89eb98447/c614d7c44ca7fb78867ba46b233acdb59287e8c8/1ab669c2b44e1040ddfab7cd7f717aad580d17aa/263f7d61a4201cde16849b2d016251806e7418be

Timelineinfo

09/11/2026 CVE reserved
09/16/2026 +5 days Advisory disclosed
09/16/2026 +0 days VulDB entry created
09/16/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90027 (🔒)
GCVE (CVE): GCVE-0-2026-90027
GCVE (VulDB): GCVE-100-405871

Entryinfo

Created: 09/16/2026 15:29
Changes: 09/16/2026 15:29 (59)
Complete: 🔍
Cache ID: 216::103

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