CVE-2026-89585High· 7.8▾ TwilightIn 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_…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 4.4
none → medium
— → 7.8
none → high
7.8 → 4.4
high → medium
4.4 → 7.8
medium → high
7.8 → 5.5
high → medium
Last analysed / modified upstream
5.5 → 7.8
medium → high
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.
Linux >= 39f8ea46724efbed3ca021863a22337c31be264c < cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04Linux >= 39f8ea46724efbed3ca021863a22337c31be264c < 22586432c1aba89d9bd33f3173408dac830f220bLinux >= 39f8ea46724efbed3ca021863a22337c31be264c < 6eaed64a32e550daf0dc9549742b3ab9e41d984fLinux >= 39f8ea46724efbed3ca021863a22337c31be264c < fe7ba73dde94c5f413b1588cd444b49105015ddaLinux >= 39f8ea46724efbed3ca021863a22337c31be264c < 84858671842ae5857b9ed1202b62f9045373dcd1Linux >= 39f8ea46724efbed3ca021863a22337c31be264c < ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755Linux >= 39f8ea46724efbed3ca021863a22337c31be264c < e3e3bf40916c1e810df03958cfa7ba6883cdce79Linux 4.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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