Linux Kernel up to 7.2.5 ACPI acpi_device_cleanup allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.1.187/6.6.156/6.12.109/6.18.51/7.2.5. Affected by this vulnerability is the function acpi_device_cleanup of the component ACPI. Executing a manipulation can lead to allocation of resources. The identification of this vulnerability is CVE-2026-90194. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.1.187/6.6.156/6.12.109/6.18.51/7.2.5 and classified as critical. This vulnerability affects the function acpi_device_cleanup of the component ACPI. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect confidentiality, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ACPI: scan: fix bus ID cleanup on device_add() failures When device_add() fails after acpi_device_set_name() has allocated an instance ID and a new acpi_device_bus_id has been linked into acpi_bus_id_list, the rollback path only removes wakeup_list and detaches the ACPI handle data. That leaves the bus-ID bookkeeping behind and keeps the allocated instance number consumed. Move the bus-ID cleanup and wakeup-list removal into a single helper. Use it from both the normal device teardown path and the device_add() rollback path. The wakeup list node is initialized before registration, so it can be deleted without checking whether the device is wakeup- capable like in the original teardown path. [ rjw: Rename acpi_device_del_list() to acpi_device_cleanup() ] [ rjw: Subject and changelog edits ]

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-90194 since 09/11/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/17/2026). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 8cc2017aa804f157e717b5fd471e50fbddfec654/f30379b8a4e24623594235dd5aefb2957e0cc228/83ee65feadc88de681abc6e977d54eceda95abd7/15512c6b5dea72fb5f1f41c1aa96f3f32531ca03/0b9053cd0955c7cd66d71a8442be33926d70e197/a414485ebc2aa50907d0ce97cde2b1a353696897 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
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 6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 8cc2017aa804f157e717b5fd471e50fbddfec654/f30379b8a4e24623594235dd5aefb2957e0cc228/83ee65feadc88de681abc6e977d54eceda95abd7/15512c6b5dea72fb5f1f41c1aa96f3f32531ca03/0b9053cd0955c7cd66d71a8442be33926d70e197/a414485ebc2aa50907d0ce97cde2b1a353696897

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90194 (🔒)
GCVE (CVE): GCVE-0-2026-90194
GCVE (VulDB): GCVE-100-406714

Entryinfo

Created: 09/17/2026 20:36
Changes: 09/17/2026 20:36 (59)
Complete: 🔍
Cache ID: 216::103

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