CVE-2023-54036

NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

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

wifi: rtl8xxxu: Fix memory leaks with RTL8723BU, RTL8192EU

The wifi + bluetooth combo chip RTL8723BU can leak memory (especially?) when it's connected to a bluetooth audio device. The busy bluetooth traffic generates lots of C2H (card to host) messages, which are not freed correctly.

To fix this, move the dev_kfree_skb() call in rtl8xxxu_c2hcmd_callback() inside the loop where skb_dequeue() is called.

The RTL8192EU leaks memory because the C2H messages are added to the queue and left there forever. (This was fine in the past because it probably wasn't sending any C2H messages until commit e542e66b7c2e ("wifi: rtl8xxxu: gen2: Turn on the rate control"). Since that commit it sends a C2H message when the TX rate changes.)

To fix this, delete the check for rf_paths > 1 and the goto. Let the function process the C2H messages from RTL8192EU like the ones from the other chips.

Theoretically the RTL8188FU could also leak like RTL8723BU, but it most likely doesn't send C2H messages frequently enough.

This change was tested with RTL8723BU by Erhard F. I tested it with RTL8188FU and RTL8192EU.

CVSS v3
—
EG Score
0.0(none)
EG Risk
—
EPSS
5.3%
KEV
Not listed

Published

December 24, 2025

Last Modified

April 15, 2026

References (5)

Vendor Advisories for CVE-2023-54036(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 @ 5.10.173—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 8× in last 7d / 40× 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 111 total refreshes for this CVE.

  1. 2026-07-22 23:16 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-22 14:07 UTCEPSS rescore
  4. 2026-07-21 15:23 UTCEPSS rescore
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  18. 2026-07-09 22:45 UTCOSV refresh
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  1. 2026-07-04 06:29 UTCEPSS rescore
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  3. 2026-06-30 23:21 UTCEPSS rescore
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  5. 2026-06-29 14:05 UTCEPSS rescore
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  18. 2026-06-21 14:55 UTCEPSS rescore
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  20. 2026-06-21 08:31 UTCOSV refresh
  21. 2026-06-21 01:58 UTCEPSS rescore
  22. 2026-06-21 01:58 UTCEPSS rescore
  23. 2026-06-19 19:24 UTCEPSS rescore
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  25. 2026-06-18 17:51 UTCEPSS rescore
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  27. 2026-06-16 17:51 UTCEPSS rescore
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  29. 2026-06-15 17:47 UTCEPSS rescore
  30. 2026-06-14 23:16 UTCEPSS rescore
  31. 2026-06-13 22:59 UTCEPSS rescore
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  45. 2026-06-05 06:09 UTCEPSS rescore
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  47. 2026-06-04 13:11 UTCEPSS rescore
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  49. 2026-06-02 20:12 UTCEPSS rescore
  50. 2026-06-02 20:12 UTCEPSS rescore
  51. 2026-06-01 22:52 UTCOSV refresh
  52. 2026-06-01 13:51 UTCEPSS rescore
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  55. 2026-05-31 00:15 UTCEPSS rescore
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  71. 2026-05-21 02:19 UTCEG score recompute
  72. 2026-05-21 02:19 UTCVendor advisory
  73. 2026-05-21 02:19 UTCGHSA enrichment
  74. 2026-05-20 22:37 UTCEPSS rescore
  75. 2026-05-20 22:37 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2023-54036?
CVE-2023-54036 is a none vulnerability published on December 24, 2025. In the Linux kernel, the following vulnerability has been resolved: wifi: rtl8xxxu: Fix memory leaks with RTL8723BU, RTL8192EU The wifi + bluetooth combo chip RTL8723BU can leak memory (especially?) when it's connected to a bluetooth audio device. The busy bluetooth traffic generates lots of C2H…
When was CVE-2023-54036 disclosed?
CVE-2023-54036 was first published in the National Vulnerability Database on December 24, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54036 actively exploited?
CVE-2023-54036 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2023-54036?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54036, 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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