CVE-2023-53695

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-22. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
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:

udf: Detect system inodes linked into directory hierarchy

When UDF filesystem is corrupted, hidden system inodes can be linked into directory hierarchy which is an avenue for further serious corruption of the filesystem and kernel confusion as noticed by syzbot fuzzed images. Refuse to access system inodes linked into directory hierarchy and vice versa.

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

October 22, 2025

Last Modified

August 5, 2026

Advisory Details (7)

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

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d747b31e2925a2f384e7dd1901a2e5bc5f984ed8
generic

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a44ec34b90440ada190924f5908b97026504fdcd
generic

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e3b5ef7d02eaa6553e79b4af9bd99227280f245
generic

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/85a37983ec69cc9fcd188bc37c4de15ee326355a
generic

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/37e74003d81e79457535cbbdfa1603431c03fac0
generic

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f328751b65c49c13a312d67a3bf27766b85baf7
generic

udf: Detect system inodes linked into directory hierarchy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1dc71eeb198a8daa17d0c995998a53b0b749a158

Vendor Advisories for CVE-2023-53695(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 @ 4.19.278—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.

Data Freshness Timeline

(refreshed 16× in last 7d / 48× 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 138 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-05 10:16 UTCEG score recompute
  4. 2026-08-05 10:16 UTCGHSA enrichment
  5. 2026-08-04 10:56 UTCEG score recompute
  6. 2026-08-04 10:56 UTCGHSA enrichment
  7. 2026-08-04 10:36 UTCEPSS rescore
  8. 2026-08-04 09:27 UTCEG score recompute▲ 7.80
  9. 2026-08-04 09:27 UTCGHSA enrichment
  10. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  11. 2026-08-03 10:34 UTCEPSS rescore
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  23. 2026-07-23 02:29 UTCEG score recompute
  24. 2026-07-22 23:16 UTCEG score recompute
  25. 2026-07-22 14:07 UTCEPSS rescore
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  19. 2026-07-10 03:54 UTCOSV refresh
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  48. 2026-06-21 14:31 UTCOSV refresh
  49. 2026-06-21 01:58 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-53695?
CVE-2023-53695 is a high vulnerability published on October 22, 2025. In the Linux kernel, the following vulnerability has been resolved: udf: Detect system inodes linked into directory hierarchy When UDF filesystem is corrupted, hidden system inodes can be linked into directory hierarchy which is an avenue for further serious corruption of the filesystem and kernel…
When was CVE-2023-53695 disclosed?
CVE-2023-53695 was first published in the National Vulnerability Database on October 22, 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-2023-53695 actively exploited?
CVE-2023-53695 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 94.9% of all scored CVEs.
What is the CVSS score of CVE-2023-53695?
CVE-2023-53695 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-53695?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53695, 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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