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

fbdev: uvesafb: unregister connector callback on init failure

uvesafb_init() registers the v86d connector callback before registering
the platform driver. If platform_driver_register() fails, the function
returns the error directly and leaves the connector callback registered.

The later platform-device failure path already unregisters the callback.
Add the same cleanup before the final return when platform-driver
registration fails.

This issue was identified during our ongoing static-analysis research while
reviewing kernel code.
Published: 2026-09-11
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Kernel Instability
Action: Patch Kernel
AI Analysis

Impact

The uvesafb framebuffer driver registers a v86d connector callback during initialization before attempting to register its platform driver. If the platform registration fails, the callback remains registered, and a later failure path fails to remove it. The orphaned callback can be invoked later by the kernel, leading to an Oops or kernel crash. This flaw causes reliability issues and may result in system reboot, but it does not provide code execution or privilege escalation.

Affected Systems

Any configuration of the Linux kernel that includes the uvesafb driver is potentially affected. The CVE entry does not list specific kernel versions, so any kernel that still contains the legacy uvesafb implementation prior to the regression fix is at risk.

Risk and Exploitability

The CVSS score of 2.3 reflects a low severity assessment. The EPSS score of < 1% and the flaw is not in the CISA KEV catalog. Exploitation requires the kernel to load a uvesafb driver and for platform_driver_register() to fail—a scenario unlikely under normal operation. Overall risk is modest, primarily limited to local environments where such initialization failures might occur.

Generated by OpenCVE AI on September 13, 2026 at 04:37 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Linux kernel update that includes the uvesafb driver cleanup fix.
  • If the uvesafb driver is not required, blacklist or remove it from the kernel configuration to prevent it from loading.
  • Consider using an alternative framebuffer implementation, such as DRM or a virtual console, to avoid reliance on uvesafb.

Generated by OpenCVE AI on September 13, 2026 at 04:37 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

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

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 2.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L'}

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/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-772
References
Metrics threat_severity

None

cvssV3_1

{'score': 2.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Low


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

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: fbdev: uvesafb: unregister connector callback on init failure uvesafb_init() registers the v86d connector callback before registering the platform driver. If platform_driver_register() fails, the function returns the error directly and leaves the connector callback registered. The later platform-device failure path already unregisters the callback. Add the same cleanup before the final return when platform-driver registration fails. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
Title fbdev: uvesafb: unregister connector callback on init failure
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-13T06:31:29.310Z

Reserved: 2026-09-11T19:38:34.731Z

Link: CVE-2026-89597

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:19:44.463

Modified: 2026-09-13T07:17:25.140

Link: CVE-2026-89597

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-11T19:44:59Z

Links: CVE-2026-89597 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-13T04:45:18Z

Weaknesses
  • CWE-772

    Missing Release of Resource after Effective Lifetime