Linux Kernel up to 7.2.5 ubi ubi_init_attach initialization

CVSS Meta Temp Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 7.2.5. This affects the function ubi_init_attach of the component ubi. Executing a manipulation can lead to initialization. The identification of this vulnerability is CVE-2026-90216. The attack can only be executed locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.5. It has been declared as problematic. This vulnerability affects the function ubi_init_attach of the component ubi. The manipulation with an unknown input leads to a initialization vulnerability. The CWE definition for the vulnerability is CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. As an impact it is known to affect integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ubi: Fix rollback for explicit UBI device numbers ubi_init_attach() rolls back module initialization failures by scanning ubi_devices[0..i-1], where i is the mtd= parameter index. That assumes the parameter index matches the UBI device number. That assumption is not true when mtd= specifies an explicit ubi_num. A successfully attached device can be stored at a higher ubi_devices[] slot, and a later failure can miss it during rollback. Scan the full ubi_devices[] array and detach by the actual array index, matching the way UBI devices are stored.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-90216 since 09/11/2026. The exploitation appears to be easy. The attack needs to be approached locally. Additional levels of successful authentication are needed for exploitation. There are known technical details, but no exploit is available.

Upgrading to version 5.10.270, 5.15.221, 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 83c978921688af40dcab6db74882d1ff9b0b765c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5/4417ab6ecad01cf2d01045ef8104c95a66b0e893/552e565ed8846e7db143e4a6bdf3f5677453c686/9754f049d5f1945d4c691d1f52824eb8daf8f9be/e3f7e58189bc222971ddc860f1716f37e51ba996/87b3da4acb860605643ebee312178f13b20744cf/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73 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: 3.4
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.4
VulDB Temp Score: 3.3
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: Initialization
CWE: CWE-665
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 83c978921688af40dcab6db74882d1ff9b0b765c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5/4417ab6ecad01cf2d01045ef8104c95a66b0e893/552e565ed8846e7db143e4a6bdf3f5677453c686/9754f049d5f1945d4c691d1f52824eb8daf8f9be/e3f7e58189bc222971ddc860f1716f37e51ba996/87b3da4acb860605643ebee312178f13b20744cf/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73

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-2026-90216 (🔒)
GCVE (CVE): GCVE-0-2026-90216
GCVE (VulDB): GCVE-100-406744

Entryinfo

Created: 09/17/2026 20:52
Changes: 09/17/2026 20:52 (59)
Complete: 🔍
Cache ID: 216::103

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