CVE-2026-89585

In the Linux kernel, the following vulnerability has been resolved: auxdisplay: charlcd: cancel backlight work on registration failure With CONFIG_CHARLCD_BL_FLASH, charlcd_init() schedules bl_work before charlcd_register() calls misc_register(). If registration fails, the caller frees the charlcd object while delayed work still contains its address. Add charlcd_deinit() to cancel the delayed work and turn the backlight off. Use it for both registration rollback and normal unregistration.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/22586432c1aba89d9bd33f3173408dac830f220b
https://git.kernel.org/stable/c/6eaed64a32e550daf0dc9549742b3ab9e41d984f
https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1
https://git.kernel.org/stable/c/cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04
https://git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79
https://git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015dda
https://git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:19

NVD link : CVE-2026-89585

Mitre link : CVE-2026-89585

CVE.ORG link : CVE-2026-89585

JSON object : View

Products Affected

No product.

CWE

No CWE.

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