CVE-2026-89585

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-11. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 11, 2026

Last Modified

September 14, 2026

Advisory Details (4)

Auto-updated Sep 13, 2026
Patch available.
Web page

auxdisplay: charlcd: cancel backlight work on registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755
Web page

auxdisplay: charlcd: cancel backlight work on registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015dda
Web page

auxdisplay: charlcd: cancel backlight work on registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79
Web page

auxdisplay: charlcd: cancel backlight work on registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1

Vendor Advisories for CVE-2026-89585(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 35× in last 7d / 158× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 171 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 78 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-13 04:53 UTCEG score recompute
  3. 2026-10-13 04:53 UTCVendor advisory
  4. 2026-10-13 04:53 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-12 14:48 UTCEG score recompute
  7. 2026-10-11 22:34 UTCEG score recompute
  8. 2026-10-11 22:34 UTCVendor advisory
  9. 2026-10-11 22:34 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  10. 2026-10-11 19:15 UTCEG score recompute
  11. 2026-10-11 16:32 UTCEG score recompute
  12. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-11 13:47 UTCEG score recompute
  14. 2026-10-11 09:46 UTCVendor advisory
  15. 2026-10-11 09:45 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-10 20:48 UTCEG score recompute
  17. 2026-10-10 20:48 UTCVendor advisory
  18. 2026-10-10 20:47 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-10 07:59 UTCEG score recompute
  21. 2026-10-10 07:59 UTCVendor advisory
  22. 2026-10-10 07:59 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  23. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-10-09 19:11 UTCVendor advisory
  25. 2026-10-09 19:11 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
Show 68 more
  1. 2026-10-08 23:15 UTCEG score recompute
  2. 2026-10-08 23:15 UTCVendor advisory
  3. 2026-10-08 23:15 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  4. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-08 08:29 UTCEG score recompute
  6. 2026-10-08 08:29 UTCVendor advisory
  7. 2026-10-08 08:29 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-10-07 19:42 UTCVendor advisory
  10. 2026-10-07 19:41 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-10-07 05:13 UTCVendor advisory
  12. 2026-10-07 05:13 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-10-06 16:25 UTCEG score recompute
  14. 2026-10-06 16:25 UTCVendor advisory
  15. 2026-10-06 16:25 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-06 03:38 UTCEG score recompute
  18. 2026-10-06 03:38 UTCVendor advisory
  19. 2026-10-06 03:38 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  20. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-05 14:45 UTCVendor advisory
  22. 2026-10-05 14:45 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  23. 2026-10-05 01:58 UTCEG score recompute
  24. 2026-10-05 01:58 UTCVendor advisory
  25. 2026-10-05 01:58 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  26. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  27. 2026-10-04 13:10 UTCVendor advisory
  28. 2026-10-04 13:10 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  29. 2026-10-04 00:09 UTCEG score recompute
  30. 2026-10-04 00:09 UTCVendor advisory
  31. 2026-10-04 00:09 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  32. 2026-10-03 10:12 UTCVendor advisory
  33. 2026-10-03 10:12 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  34. 2026-10-02 20:49 UTCEG score recompute
  35. 2026-10-02 20:49 UTCVendor advisory
  36. 2026-10-02 20:49 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  37. 2026-10-02 07:54 UTCEG score recompute
  38. 2026-10-02 07:54 UTCVendor advisory
  39. 2026-10-02 07:54 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  40. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  41. 2026-10-01 19:07 UTCVendor advisory
  42. 2026-10-01 19:07 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  43. 2026-10-01 06:04 UTCVendor advisory
  44. 2026-10-01 06:04 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-09-30 17:17 UTCEG score recompute
  46. 2026-09-30 17:17 UTCVendor advisory
  47. 2026-09-30 17:17 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  48. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  49. 2026-09-30 03:42 UTCEG score recompute
  50. 2026-09-30 03:42 UTCVendor advisory
  51. 2026-09-30 03:42 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  52. 2026-09-29 14:55 UTCVendor advisory
  53. 2026-09-29 14:55 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  54. 2026-09-29 02:07 UTCEG score recompute
  55. 2026-09-29 02:07 UTCVendor advisory
  56. 2026-09-29 02:07 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  57. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  58. 2026-09-28 13:20 UTCVendor advisory
  59. 2026-09-28 13:20 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  60. 2026-09-28 00:33 UTCEG score recompute
  61. 2026-09-28 00:33 UTCVendor advisory
  62. 2026-09-28 00:33 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  63. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  64. 2026-09-27 11:46 UTCVendor advisory
  65. 2026-09-27 11:46 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8
  66. 2026-09-26 22:59 UTCEG score recompute
  67. 2026-09-26 22:59 UTCVendor advisory
  68. 2026-09-26 22:59 UTCGHSA enrichmentGHSA-72rp-5pw2-wrgc · GitHub severity HIGH · GitHub CVSS 7.8

Frequently asked(5)

What is CVE-2026-89585?
CVE-2026-89585 is a high-severity vulnerability; its CVE record was published on September 11, 2026. In the Linux kernel, the following vulnerability has been resolved: auxdisplay: charlcd: cancel backlight work on registration failure With CONFIGCHARLCDBLFLASH, charlcdinit() schedules bl_work before charlcdregister() calls miscregister(). If registration fails, the caller frees the charlcd object…
When was the CVE record for CVE-2026-89585 published?
The CVE record for CVE-2026-89585 was published on September 11, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 14, 2026; the record at its source may have been updated since.
Is CVE-2026-89585 actively exploited?
CVE-2026-89585 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89585?
CVE-2026-89585 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89585?
A fix for CVE-2026-89585 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-89585 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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