Vulnerability details
CVE-2026-89585
Linux Linux
auxdisplay: charlcd: cancel backlight work on registration failure
CVSS 3.1
7.8High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 4.12 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < 22586432c1aba89d9bd33f3173408dac830f220b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < 6eaed64a32e550daf0dc9549742b3ab9e41d984f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < fe7ba73dde94c5f413b1588cd444b49105015dda | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < e3e3bf40916c1e810df03958cfa7ba6883cdce79 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 39f8ea46724efbed3ca021863a22337c31be264c ≤ v < 84858671842ae5857b9ed1202b62f9045373dcd1 | CVEProject cvelistV5 (CNA) |
References and advisories
7- 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
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Details
- Published
- 2026-09-11
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.16%
Probability of exploitation in 30 days
6.2%
Percentile (among all CVEs)
Weaknesses (CWE)
- —