CVE-2023-53398

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-18. NVD baseline CVSS 7.8; sources differ by 0.0.

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

A fix is available — apply it.

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

mlx5: fix possible ptp queue fifo use-after-free

Fifo indexes are not checked during pop operations and it leads to potential use-after-free when poping from empty queue. Such case was possible during re-sync action. WARN_ON_ONCE covers future cases.

There were out-of-order cqe spotted which lead to drain of the queue and use-after-free because of lack of fifo pointers check. Special check and counter are added to avoid resync operation if SKB could not exist in the fifo because of OOO cqe (skb_id must be between consumer and producer index).

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
4%
KEV
Not listed

Published

September 18, 2025

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

mlx5: fix possible ptp queue fifo use-after-free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a50cf1e8e5157b82268eee7e330dbe5736a0948
generic

mlx5: fix possible ptp queue fifo use-after-free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6afdedc4e66e3846ce497744f01b95c34bf39d21
generic

mlx5: fix possible ptp queue fifo use-after-free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/52e6e7a0bc04c85012a9251c7cf2d444a77eb966

Vendor Advisories for CVE-2023-53398(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-513.5.1.el8_92023-11-14redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
linuxKernel @ 6.1.18—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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 47× 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 110 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 10:19 UTCEG score recompute
  4. 2026-08-05 10:19 UTCVendor advisory
  5. 2026-08-05 10:19 UTCGHSA enrichment
  6. 2026-08-04 10:36 UTCEPSS rescore
  7. 2026-08-04 09:30 UTCEG score recompute
  8. 2026-08-04 09:30 UTCVendor advisory
  9. 2026-08-04 09:30 UTCGHSA enrichment
  10. 2026-08-03 10:34 UTCEPSS rescore
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  20. 2026-07-23 19:41 UTCOSV refresh
  21. 2026-07-23 14:16 UTCEPSS rescore
  22. 2026-07-23 02:29 UTCEG score recompute
  23. 2026-07-22 23:16 UTCEG score recompute
  24. 2026-07-22 14:07 UTCEPSS rescore
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  1. 2026-07-21 15:23 UTCEPSS rescore
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  23. 2026-07-06 16:26 UTCEPSS rescore
  24. 2026-07-06 16:26 UTCEPSS rescore
  25. 2026-07-06 14:01 UTCOSV refresh
  26. 2026-07-06 02:22 UTCEPSS rescore
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  28. 2026-07-05 02:29 UTCEPSS rescore
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  30. 2026-07-01 15:05 UTCEPSS rescore
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  50. 2026-06-18 17:51 UTCEPSS rescore
  51. 2026-06-18 02:14 UTCOSV refresh
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Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-53398?
CVE-2023-53398 is a high vulnerability published on September 18, 2025. In the Linux kernel, the following vulnerability has been resolved: mlx5: fix possible ptp queue fifo use-after-free Fifo indexes are not checked during pop operations and it leads to potential use-after-free when poping from empty queue. Such case was possible during re-sync action. WARNONONCE…
When was CVE-2023-53398 disclosed?
CVE-2023-53398 was first published in the National Vulnerability Database on September 18, 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-2023-53398 actively exploited?
CVE-2023-53398 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 96.5% of all scored CVEs.
What is the CVSS score of CVE-2023-53398?
CVE-2023-53398 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53398?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53398, 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.

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