CVE-2026-89585auxdisplay: charlcd: cancel backlight work on registration failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 39f8ea46724efbed3ca021863a22337c31be264c before cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04; from 39f8ea46724efbed3ca021863a22337c31be264c before 22586432c1aba89d9bd33f3173408dac830f220b; 39f8ea46724efbed3ca021863a22337c31be264c builds before 6eaed64a32e550daf0dc9549742b3ab9e41d984f; from 39f8ea46724efbed3ca021863a22337c31be264c before fe7ba73dde94c5f413b1588cd444b49105015dda; from 39f8ea46724efbed3ca021863a22337c31be264c before 84858671842ae5857b9ed1202b62f9045373dcd1; from 39f8ea46724efbed3ca021863a22337c31be264c before ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755; from 39f8ea46724efbed3ca021863a22337c31be264c before e3e3bf40916c1e810df03958cfa7ba6883cdce79 | CNA record |
References
- https://git.kernel.org/stable/c/cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04
- https://git.kernel.org/stable/c/22586432c1aba89d9bd33f3173408dac830f220b
- https://git.kernel.org/stable/c/6eaed64a32e550daf0dc9549742b3ab9e41d984f
- https://git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015dda
- https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1
- https://git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755
- https://git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.