CVE-2023-0468

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2023-01-26. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: Elevated riskExposed: 0

A fix is available — apply it.

A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.

CVSS v3
4.7
EG Score
4.7(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity47% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

January 26, 2023

Last Modified

April 1, 2025

References (2)

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-5.15.0-1025-raspi (5.15.0-1025.27) @ jammy2026-05-23ubuntu
ubuntulinux-image-unsigned-5.15.0-1016-gkeop (5.15.0-1016.21) @ jammy2026-05-23ubuntu
ubuntulinux-image-5.15.0-1029-kvm (5.15.0-1029.34) @ jammy2026-05-23ubuntu
ubuntulinux-buildinfo-5.15.0-67-generic-lpae (5.15.0-67.74) @ jammy2026-05-23ubuntu
ubuntulowlatency-4.15 (4.15.0-69) @ xenial2026-05-23ubuntu
ubuntulinux-cloud-tools-5.15.0-1026-intel-iotg (5.15.0-1026.31) @ jammy2026-05-23ubuntu
ubuntulinux-image-lowlatency (5.19.0.1022.18) @ kinetic2026-05-23ubuntu
ubuntulinux-tools-oem-22.04b (6.0.0.1015.15) @ jammy2026-05-23ubuntu
ubuntulinux-oem-22.04a (5.17.0.1031.29) @ jammy2026-05-23ubuntu

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.12-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.12-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.12-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(10)

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 7× in last 7d / 27× 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 151 total refreshes for this CVE.

  1. 2026-09-08 21:57 UTCEPSS rescore
  2. 2026-09-07 15:59 UTCEPSS rescore
  3. 2026-09-06 13:45 UTCEPSS rescore
  4. 2026-09-05 15:25 UTCEPSS rescore
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  7. 2026-09-02 14:09 UTCEPSS rescore
  8. 2026-09-01 13:51 UTCEPSS rescore
  9. 2026-09-01 09:29 UTCOSV refresh
  10. 2026-08-30 19:15 UTCEPSS rescore
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  22. 2026-08-16 14:53 UTCEPSS rescore
  23. 2026-08-16 02:12 UTCEPSS rescore
  24. 2026-08-15 08:37 UTCOSV refresh
  25. 2026-08-15 01:27 UTCEPSS rescore
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  1. 2026-08-13 21:58 UTCEPSS rescore
  2. 2026-08-12 13:48 UTCEPSS rescore
  3. 2026-08-09 13:44 UTCEPSS rescore
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  5. 2026-08-08 16:34 UTCEPSS rescore
  6. 2026-08-07 16:24 UTCEPSS rescore
  7. 2026-08-06 13:44 UTCEPSS rescore
  8. 2026-08-05 19:15 UTCEPSS rescore
  9. 2026-08-04 15:07 UTCEPSS rescore
  10. 2026-08-04 10:35 UTCEPSS rescore
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  12. 2026-08-02 02:24 UTCEPSS rescore
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  15. 2026-07-30 20:50 UTCOSV refresh
  16. 2026-07-30 16:25 UTCEPSS rescore
  17. 2026-07-30 01:28 UTCEPSS rescore
  18. 2026-07-28 15:34 UTCEPSS rescore
  19. 2026-07-26 14:52 UTCEPSS rescore
  20. 2026-07-26 14:52 UTCEPSS rescore
  21. 2026-07-25 14:16 UTCEPSS rescore
  22. 2026-07-24 14:15 UTCEPSS rescore
  23. 2026-07-23 14:16 UTCEPSS rescore
  24. 2026-07-23 14:16 UTCEPSS rescore
  25. 2026-07-23 02:17 UTCEG score recompute
  26. 2026-07-22 23:05 UTCEG score recompute
  27. 2026-07-22 14:06 UTCEPSS rescore
  28. 2026-07-22 14:06 UTCEPSS rescore
  29. 2026-07-21 15:23 UTCEPSS rescore
  30. 2026-07-21 15:23 UTCEPSS rescore
  31. 2026-07-20 17:05 UTCEPSS rescore
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  39. 2026-07-15 16:56 UTCEPSS rescore
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  41. 2026-07-15 01:58 UTCEPSS rescore
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  43. 2026-07-13 22:28 UTCEPSS rescore
  44. 2026-07-13 22:28 UTCEPSS rescore
  45. 2026-07-13 06:11 UTCEPSS rescore
  46. 2026-07-13 06:11 UTCEPSS rescore
  47. 2026-07-13 05:38 UTCOSV refresh
  48. 2026-07-12 05:44 UTCEPSS rescore
  49. 2026-07-11 08:25 UTCEPSS rescore
  50. 2026-07-11 08:25 UTCEPSS rescore
  51. 2026-07-09 19:08 UTCEPSS rescore
  52. 2026-07-07 13:44 UTCEPSS rescore
  53. 2026-07-06 16:25 UTCEPSS rescore
  54. 2026-07-06 02:21 UTCEPSS rescore
  55. 2026-07-05 02:28 UTCEPSS rescore
  56. 2026-07-04 06:29 UTCEPSS rescore
  57. 2026-07-01 15:04 UTCEPSS rescore
  58. 2026-06-30 23:21 UTCEPSS rescore
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  60. 2026-06-29 14:04 UTCEPSS rescore
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  66. 2026-06-25 13:48 UTCEPSS rescore
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  68. 2026-06-24 17:31 UTCOSV refresh
  69. 2026-06-24 14:03 UTCEPSS rescore
  70. 2026-06-24 14:03 UTCEPSS rescore
  71. 2026-06-23 21:31 UTCEPSS rescore
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  73. 2026-06-22 14:24 UTCEPSS rescore
  74. 2026-06-21 14:55 UTCEPSS rescore
  75. 2026-06-21 14:55 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-0468?
CVE-2023-0468 is a medium vulnerability published on January 26, 2023. A use-after-free flaw was found in iouring/poll.c in iopollcheckevents in the iouring subcomponent in the Linux Kernel due to a race condition of pollrefs. This flaw may cause a NULL pointer dereference.
When was CVE-2023-0468 disclosed?
CVE-2023-0468 was first published in the National Vulnerability Database on January 26, 2023, with the most recent update on April 1, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-0468 actively exploited?
CVE-2023-0468 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 79.8% of all scored CVEs.
What is the CVSS score of CVE-2023-0468?
CVE-2023-0468 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2023-0468?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0468, 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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