CVE-2023-21102

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2023-05-16. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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

A fix is available — apply it.

In __efi_rt_asm_wrapper of efi-rt-wrapper.S, there is a possible bypass of shadow stack protection due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-260821414References: Upstream kernel

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

May 15, 2023

Last Modified

January 24, 2025

References (2)

Vendor Advisories for CVE-2023-21102(2)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-generic-hwe-22.04-edge (5.19.0.42.43~22.04.15) @ jammy2026-05-25ubuntu
ubuntulinux-image-lowlatency (5.19.0.1024.20) @ kinetic2026-05-25ubuntu
ubuntulinux-ibm-cloud-tools-common (5.19.0-1022.24) @ kinetic2026-05-25ubuntu
ubuntulinux-image-5.15.0-1030-intel-iotg (5.15.0-1030.35~20.04.1) @ focal2026-05-25ubuntu
redhatkernel-rt-0:5.14.0-284.30.1.rt14.315.el9_22023-09-12redhat
redhatkernel-0:5.14.0-284.30.1.el9_22023-09-12redhat

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 (25 versions)5.10.178-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.8-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.8-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.8-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(5)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 29× 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 159 total refreshes for this CVE.

  1. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
  3. 2026-09-05 15:25 UTCEPSS rescore
  4. 2026-09-04 13:58 UTCEPSS rescore
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  6. 2026-09-04 06:46 UTCOSV refresh
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  21. 2026-08-18 13:46 UTCEPSS rescore
  22. 2026-08-17 17:29 UTCOSV refresh
  23. 2026-08-17 13:44 UTCEPSS rescore
  24. 2026-08-16 14:53 UTCEPSS rescore
  25. 2026-08-16 02:12 UTCEPSS rescore
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  1. 2026-08-15 01:28 UTCEPSS rescore
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  3. 2026-08-13 21:58 UTCEPSS rescore
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  5. 2026-08-09 13:44 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
  11. 2026-08-03 10:34 UTCEPSS rescore
  12. 2026-08-02 12:57 UTCOSV refresh
  13. 2026-08-02 02:24 UTCEPSS rescore
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  19. 2026-07-28 15:34 UTCEPSS rescore
  20. 2026-07-26 14:52 UTCEPSS rescore
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  22. 2026-07-25 14:16 UTCEPSS rescore
  23. 2026-07-25 14:16 UTCEPSS rescore
  24. 2026-07-24 14:15 UTCEPSS rescore
  25. 2026-07-23 14:16 UTCEPSS rescore
  26. 2026-07-23 14:16 UTCEPSS rescore
  27. 2026-07-23 02:18 UTCEG score recompute
  28. 2026-07-22 23:05 UTCEG score recompute
  29. 2026-07-22 14:06 UTCEPSS rescore
  30. 2026-07-21 15:23 UTCEPSS rescore
  31. 2026-07-20 17:05 UTCEPSS rescore
  32. 2026-07-19 14:29 UTCEPSS rescore
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  38. 2026-07-16 17:01 UTCEPSS rescore
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  40. 2026-07-15 20:19 UTCOSV refresh
  41. 2026-07-15 16:56 UTCEPSS rescore
  42. 2026-07-15 01:58 UTCEPSS rescore
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  44. 2026-07-13 22:28 UTCEPSS rescore
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  46. 2026-07-13 06:11 UTCEPSS rescore
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  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. 2026-07-08 15:13 UTCEPSS rescore
  53. 2026-07-07 13:44 UTCEPSS rescore
  54. 2026-07-06 16:26 UTCEPSS rescore
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  56. 2026-07-06 02:21 UTCEPSS rescore
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  60. 2026-07-02 16:58 UTCEPSS rescore
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  66. 2026-06-28 04:54 UTCEPSS rescore
  67. 2026-06-28 04:54 UTCEPSS rescore
  68. 2026-06-27 21:04 UTCOSV refresh
  69. 2026-06-27 03:07 UTCEPSS rescore
  70. 2026-06-25 13:48 UTCEPSS rescore
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  74. 2026-06-23 21:31 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-21102?
CVE-2023-21102 is a high vulnerability published on May 15, 2023. In efirtasm_wrapper of efi-rt-wrapper.S, there is a possible bypass of shadow stack protection due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions:…
When was CVE-2023-21102 disclosed?
CVE-2023-21102 was first published in the National Vulnerability Database on May 15, 2023, with the most recent update on January 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-21102 actively exploited?
CVE-2023-21102 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 92.7% of all scored CVEs.
What is the CVSS score of CVE-2023-21102?
CVE-2023-21102 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-21102?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21102, 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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