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 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

Published

2026-09-11

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• 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

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