High severity7.8NVD Advisory· Published Sep 11, 2026· Updated Oct 19, 2026
CVE-2026-89585
CVE-2026-89585
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- osv-coords2 versions
>= 4.12.0, < 5.15.221+ 1 more
- (no CPE)range: >= 4.12.0, < 5.15.221
- (no CPE)range: < 7.2.7-1.1
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/22586432c1aba89d9bd33f3173408dac830f220bnvd
- git.kernel.org/stable/c/6eaed64a32e550daf0dc9549742b3ab9e41d984fnvd
- git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1nvd
- git.kernel.org/stable/c/cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04nvd
- git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79nvd
- git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015ddanvd
- git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755nvd
News mentions
0No linked articles in our index yet.