CVE-2026-89585auxdisplay: charlcd: cancel backlight work on registration failure
- 7.8HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 38 days later
· 38 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < 22586432c1aba89d9bd33f3173408dac830f220b
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < 6eaed64a32e550daf0dc9549742b3ab9e41d984f
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < fe7ba73dde94c5f413b1588cd444b49105015dda
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < 84858671842ae5857b9ed1202b62f9045373dcd1
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755
- affected 39f8ea46724efbed3ca021863a22337c31be264c – < e3e3bf40916c1e810df03958cfa7ba6883cdce79
- affected 4.12
- unaffected < 4.12
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.109 – ≤ 6.12.*
- unaffected 6.18.50 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04 (opens in a new tab)
- https://git.kernel.org/stable/c/22586432c1aba89d9bd33f3173408dac830f220b (opens in a new tab)
- https://git.kernel.org/stable/c/6eaed64a32e550daf0dc9549742b3ab9e41d984f (opens in a new tab)
- https://git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015dda (opens in a new tab)
- https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1 (opens in a new tab)
- https://git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755 (opens in a new tab)
- https://git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-76497 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89585)Record last updated .