CVE-2023-54220

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-30. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

serial: 8250: Fix oops for port->pm on uart_change_pm()

Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual address" about ten seconds after unloading the driver. This happens on uart_hangup() calling uart_change_pm().

Turns out commit 04e82793f068 ("serial: 8250: Reinit port->pm on port specific driver unbind") was only a partial fix. If the hardware specific driver has initialized port->pm function, we need to clear port->pm too. Just reinitializing port->ops does not do this. Otherwise serial8250_pm() will call port->pm() instead of serial8250_do_pm().

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

December 30, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b
generic

serial: 8250: Fix oops for port->pm on uart_change_pm() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c

Vendor Advisories for CVE-2023-54220(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.14.324—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (34 versions)5.10.197-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-1 ... 6.1.38-4~bpo11+1 (8 versions)6.1.52-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.13-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.13-1—

Data Freshness Timeline

(refreshed 7× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 191 total refreshes for this CVE.

  1. 2026-09-20 20:14 UTCEPSS rescore
  2. 2026-09-20 20:14 UTCEPSS rescore
  3. 2026-09-19 21:33 UTCOSV refresh
  4. 2026-09-18 19:26 UTCEPSS rescore
  5. 2026-09-16 14:06 UTCEPSS rescore
  6. 2026-09-16 05:11 UTCEPSS rescore
  7. 2026-09-16 05:11 UTCEPSS rescore
  8. 2026-09-15 03:08 UTCEPSS rescore
  9. 2026-09-13 16:45 UTCEPSS rescore
  10. 2026-09-12 14:58 UTCEPSS rescore
  11. 2026-09-11 14:51 UTCEPSS rescore
  12. 2026-09-11 09:34 UTCEPSS rescore
  13. 2026-09-08 21:58 UTCEPSS rescore
  14. 2026-09-07 15:59 UTCEPSS rescore
  15. 2026-09-06 13:46 UTCEPSS rescore
  16. 2026-09-05 15:26 UTCEPSS rescore
  17. 2026-09-04 13:58 UTCEPSS rescore
  18. 2026-09-04 05:04 UTCEPSS rescore
  19. 2026-09-02 14:10 UTCEPSS rescore
  20. 2026-09-01 13:52 UTCEPSS rescore
  21. 2026-09-01 04:36 UTCEPSS rescore
  22. 2026-09-01 01:04 UTCOSV refresh
  23. 2026-08-30 19:15 UTCEPSS rescore
  24. 2026-08-30 01:20 UTCEPSS rescore
  25. 2026-08-28 21:39 UTCEPSS rescore
Show 75 more
  1. 2026-08-27 14:23 UTCEPSS rescore
  2. 2026-08-26 14:44 UTCEPSS rescore
  3. 2026-08-25 13:47 UTCEPSS rescore
  4. 2026-08-23 00:17 UTCEPSS rescore
  5. 2026-08-23 00:17 UTCEPSS rescore
  6. 2026-08-21 23:47 UTCEPSS rescore
  7. 2026-08-20 22:53 UTCEPSS rescore
  8. 2026-08-19 17:02 UTCEPSS rescore
  9. 2026-08-18 13:46 UTCEPSS rescore
  10. 2026-08-16 14:54 UTCEPSS rescore
  11. 2026-08-16 02:12 UTCEPSS rescore
  12. 2026-08-15 01:28 UTCEPSS rescore
  13. 2026-08-15 01:08 UTCEG score recompute
  14. 2026-08-15 01:08 UTCGHSA enrichment
  15. 2026-08-13 21:58 UTCEPSS rescore
  16. 2026-08-12 13:49 UTCEPSS rescore
  17. 2026-08-10 23:58 UTCEPSS rescore
  18. 2026-08-09 22:22 UTCEG score recompute
  19. 2026-08-09 22:22 UTCGHSA enrichment
  20. 2026-08-09 13:44 UTCEPSS rescore
  21. 2026-08-08 16:35 UTCEPSS rescore
  22. 2026-08-08 04:34 UTCEG score recompute
  23. 2026-08-08 04:34 UTCGHSA enrichment
  24. 2026-08-07 16:25 UTCEPSS rescore
  25. 2026-08-06 13:45 UTCEPSS rescore
  26. 2026-08-06 06:45 UTCEG score recompute
  27. 2026-08-06 06:45 UTCGHSA enrichment
  28. 2026-08-05 19:15 UTCEPSS rescore
  29. 2026-08-05 19:15 UTCEPSS rescore
  30. 2026-08-05 10:11 UTCEG score recompute
  31. 2026-08-05 10:11 UTCGHSA enrichment
  32. 2026-08-04 11:27 UTCEG score recompute
  33. 2026-08-04 11:27 UTCGHSA enrichment
  34. 2026-08-04 10:36 UTCEPSS rescore
  35. 2026-08-04 10:21 UTCEG score recompute▲ 7.80
  36. 2026-08-04 10:21 UTCGHSA enrichment
  37. 2026-08-04 10:19 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  38. 2026-08-03 10:34 UTCEPSS rescore
  39. 2026-08-02 02:25 UTCEPSS rescore
  40. 2026-08-02 02:25 UTCEPSS rescore
  41. 2026-08-01 04:14 UTCEPSS rescore
  42. 2026-07-30 16:26 UTCEPSS rescore
  43. 2026-07-30 01:29 UTCEPSS rescore
  44. 2026-07-28 15:34 UTCEPSS rescore
  45. 2026-07-28 15:34 UTCEPSS rescore
  46. 2026-07-27 03:09 UTCOSV refresh
  47. 2026-07-26 14:53 UTCEPSS rescore
  48. 2026-07-25 14:16 UTCEPSS rescore
  49. 2026-07-24 14:16 UTCEPSS rescore
  50. 2026-07-23 14:16 UTCEPSS rescore
  51. 2026-07-23 02:30 UTCEG score recompute
  52. 2026-07-22 23:16 UTCEG score recompute
  53. 2026-07-22 14:07 UTCEPSS rescore
  54. 2026-07-22 14:07 UTCEPSS rescore
  55. 2026-07-20 17:06 UTCEPSS rescore
  56. 2026-07-19 14:30 UTCEPSS rescore
  57. 2026-07-19 14:29 UTCEPSS rescore
  58. 2026-07-19 02:27 UTCEPSS rescore
  59. 2026-07-19 02:27 UTCEPSS rescore
  60. 2026-07-18 10:03 UTCEPSS rescore
  61. 2026-07-18 10:03 UTCEPSS rescore
  62. 2026-07-16 17:01 UTCEPSS rescore
  63. 2026-07-15 16:56 UTCEPSS rescore
  64. 2026-07-15 01:59 UTCEPSS rescore
  65. 2026-07-15 01:59 UTCEPSS rescore
  66. 2026-07-13 22:28 UTCEPSS rescore
  67. 2026-07-13 22:28 UTCEPSS rescore
  68. 2026-07-13 06:11 UTCEPSS rescore
  69. 2026-07-12 05:45 UTCEPSS rescore
  70. 2026-07-12 05:45 UTCEPSS rescore
  71. 2026-07-11 08:26 UTCEPSS rescore
  72. 2026-07-09 21:45 UTCOSV refresh
  73. 2026-07-09 19:08 UTCEPSS rescore
  74. 2026-07-08 15:13 UTCEPSS rescore
  75. 2026-07-07 13:45 UTCEPSS rescore

Related CVEs(same product)

Frequently asked(5)

What is CVE-2023-54220?
CVE-2023-54220 is a high vulnerability published on December 30, 2025. In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Fix oops for port->pm on uartchangepm() Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual address" about ten seconds after unloading the driver. This…
When was CVE-2023-54220 disclosed?
CVE-2023-54220 was first published in the National Vulnerability Database on December 30, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54220 actively exploited?
CVE-2023-54220 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.4% of all scored CVEs.
What is the CVSS score of CVE-2023-54220?
CVE-2023-54220 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-54220?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54220, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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