VulnSocial

CVE-2026-89585Disclosure

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.5/ 10 priority

Sources & remediation

Other references

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-20: 1Patch / Workaround · 2026-09-20: 1Technical Details · 2026-09-20: 109-20
Signal classification1 categories
Disclosure
1100.0%
Full discourse1 post
  • DFIR Lab@DFIR_Lab
    Disclosure

    🚨 HIGH: CVE-2026-89585 (CVSS 7.8) - Linux kernel auxdisplay vulnerability allows local privilege escalation. Affects charlcd with CONFIG_CHARLCD_BL_FLASH. Patch immediately. #CVE #Vulnerability #PatchNow https://t.co/y81s5xqaMQ

    Post summary

    The text is a high-severity vulnerability alert disclosing technical details of a Linux kernel local privilege escalation vulnerability (CVE-2026-89585) and urging immediate patching.

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    139 followersView on X

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