Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc1 mpi3mr mpi3mr_sas_port_add reference count

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.14+

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc1. This issue affects the function mpi3mr_sas_port_add of the component mpi3mr. This manipulation causes reference count. This vulnerability appears as CVE-2026-98128. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc1 and classified as very critical. Affected by this vulnerability is the function mpi3mr_sas_port_add of the component mpi3mr. The manipulation with an unknown input leads to a reference count vulnerability. The CWE definition for the vulnerability is CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. 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: scsi: mpi3mr: Fix target device refcount leak in mpi3mr_sas_port_add() mpi3mr_get_tgtdev_by_addr() increments the target device kref when it returns a device. If a subsequent error triggers a goto out_fail after the tgtdev reference is acquired, the reference is never released because the out_fail path does not call mpi3mr_tgtdev_put(). This prevents the target device structure from ever being freed. Add a tgtdev put in the out_fail path, guarded by a NULL check since tgtdev is only acquired for SAS_END_DEVICE types and the same cleanup path is shared by earlier error cases where tgtdev is still NULL.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-98128 since 09/25/2026. The exploitation appears to be easy. The attack can be launched remotely. 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 09/25/2026).

Upgrading to version 6.12.111, 6.18.53, 7.2.7 or 7.3-rc2 eliminates this vulnerability. Applying the patch 040146f81d099006a354b0caacc7f01ca00f257e/06a7073b33b8f5cb0ee71e07dc669efffb1c7d58/1ccbe8c42009706af79e6629c70d42fc929aef2b/419d129f970aaa6567dbac366b0c93784bf9ec97 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
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: Reference count
CWE: CWE-911 / CWE-664
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 6.12.111/6.18.53/7.2.7/7.3-rc2
Patch: 040146f81d099006a354b0caacc7f01ca00f257e/06a7073b33b8f5cb0ee71e07dc669efffb1c7d58/1ccbe8c42009706af79e6629c70d42fc929aef2b/419d129f970aaa6567dbac366b0c93784bf9ec97

Timelineinfo

09/25/2026 Advisory disclosed
09/25/2026 +0 days CVE reserved
09/25/2026 +0 days VulDB entry created
09/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-98128 (🔒)
GCVE (CVE): GCVE-0-2026-98128
GCVE (VulDB): GCVE-100-409963

Entryinfo

Created: 09/25/2026 13:19
Changes: 09/25/2026 13:19 (59)
Complete: 🔍
Cache ID: 216::103

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