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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-89585

auxdisplay: charlcd: cancel backlight work on registration failure

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 39f8ea46724efbed3ca021863a22337c31be264c to < cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04affected
  • 39f8ea46724efbed3ca021863a22337c31be264c to < 22586432c1aba89d9bd33f3173408dac830f220baffected
  • 39f8ea46724efbed3ca021863a22337c31be264c to < 6eaed64a32e550daf0dc9549742b3ab9e41d984faffected
  • 39f8ea46724efbed3ca021863a22337c31be264c to < fe7ba73dde94c5f413b1588cd444b49105015ddaaffected
  • 39f8ea46724efbed3ca021863a22337c31be264c to < 84858671842ae5857b9ed1202b62f9045373dcd1affected
  • 39f8ea46724efbed3ca021863a22337c31be264c to < ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755affected
  • 39f8ea46724efbed3ca021863a22337c31be264c to < e3e3bf40916c1e810df03958cfa7ba6883cdce79affected

Linux Linux

Default version status: affected

  • 4.12affected
  • 0 to < 4.12unaffected
  • 5.15.221 to ≤ 5.15.*unaffected
  • 6.1.188 to ≤ 6.1.*unaffected
  • 6.6.157 to ≤ 6.6.*unaffected
  • 6.12.109 to ≤ 6.12.*unaffected
  • 6.18.50 to ≤ 6.18.*unaffected
  • 7.2.4 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References