CVE-2023-53134

Service interruption via contiguous TPA allocation

Published May 2, 2025 · Updated May 11, 2026

Resource exhaustion in Linux 5.4 through 6.3-rc1 allows local users to interrupt service when bnxt_en opens a P5 network interface. bnxt_alloc_mem requests one order-5 zeroed block for 256 concurrent TPA entries, so insufficient contiguous memory makes interface initialization fail. The condition requires a P5 network adapter, 4K pages, and local ability to open the interface; the reported consequence is allocation failure.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Linux 5.4 through 6.3-rc1 allows local users to interrupt service when bnxt_en opens a P5 network interface. bnxt_alloc_mem requests one order-5 zeroed block for 256 concurrent TPA entries, so insufficient contiguous memory makes interface initialization fail. The condition requires a P5 network adapter, 4K pages, and local ability to open the interface; the reported consequence is allocation failure.

The record

CVE
CVE-2023-53134
Published
May 2, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.4
  2. Affected versionversion=79632e9ba38671215fb193346ef6fb8db582744d <16f3aae1aa2dd89bc8d073a67f190af580386ae9
  3. Affected versionversion=79632e9ba38671215fb193346ef6fb8db582744d <20fd0607acbf9770db9b99e3418dd75614f80b6c
  4. Affected versionversion=79632e9ba38671215fb193346ef6fb8db582744d <accd7e23693aaaa9aa0d3e9eca0ae77d1be80ab3
  5. Affected versionversion=79632e9ba38671215fb193346ef6fb8db582744d <ad529d1fae1565d38f929479d4ea8aea90054bd2
  6. Affected versionversion=79632e9ba38671215fb193346ef6fb8db582744d <d16701a385b54f44bf41ff1d7485e7a11080deb3
  7. Affected versionversion=79632e9ba38671215fb193346ef6fb8db582744d <fcae40e65802547def39b4deaa2ae38a29864d81

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=79632e9ba38671215fb193346ef6fb8db582744d <16f3aae1aa2dd89bc8d073a67f190af580386ae9; version=79632e9ba38671215fb193346ef6fb8db582744d <20fd0607acbf9770db9b99e3418dd75614f80b6c; version=79632e9ba38671215fb193346ef6fb8db582744d <accd7e23693aaaa9aa0d3e9eca0ae77d1be80ab3; version=79632e9ba38671215fb193346ef6fb8db582744d <ad529d1fae1565d38f929479d4ea8aea90054bd2; version=79632e9ba38671215fb193346ef6fb8db582744d <d16701a385b54f44bf41ff1d7485e7a11080deb3; version=79632e9ba38671215fb193346ef6fb8db582744d <fcae40e65802547def39b4deaa2ae38a29864d81

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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