CVE-2023-54003

Kernel resource exhaustion via leaked GID references

Published Dec 24, 2025 · Updated Dec 24, 2025

A reference leak in Linux RDMA/core allows local users to exhaust kernel resources by repeatedly triggering failed address-handle creation. In drivers/infiniband/core/verbs.c, the address-handle creation error path returns without releasing sgid_attr, leaving a GID-table reference held. A local low-privileged user must be able to submit RDMA address-handle creation requests and force them to fail; repeated failures consume kernel resources and can interrupt service.

CVSS severity4.8
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A reference leak in Linux RDMA/core allows local users to exhaust kernel resources by repeatedly triggering failed address-handle creation. In drivers/infiniband/core/verbs.c, the address-handle creation error path returns without releasing sgid_attr, leaving a GID-table reference held. A local low-privileged user must be able to submit RDMA address-handle creation requests and force them to fail; repeated failures consume kernel resources and can interrupt service.

The record

CVE
CVE-2023-54003
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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=1a1f460ff151710289c2f8d4badd8b603b87d610 <370280c65c28a515b841c9f2c08524f06182510c
  2. Affected versionversion=1a1f460ff151710289c2f8d4badd8b603b87d610 <632d6baf8884d803e598bf5164008d23fd9b736c
  3. Affected versionversion=1a1f460ff151710289c2f8d4badd8b603b87d610 <9c46c49ad3ffe84121715d392b5a0a94f9f10669
  4. Affected versionversion=1a1f460ff151710289c2f8d4badd8b603b87d610 <aca3b0fa3d04b40c96934d86cc224cccfa7ea8e0
  5. Affected versionversion=1a1f460ff151710289c2f8d4badd8b603b87d610 <d1b9b3191697a80aca8e247320eba46f24d41d18
  6. Affected versionversion=1a1f460ff151710289c2f8d4badd8b603b87d610 <e97ff11b396c320d2cc025b09741ba432fcb20a2
  7. Affected versionversion=4.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1a1f460ff151710289c2f8d4badd8b603b87d610 <370280c65c28a515b841c9f2c08524f06182510c; version=1a1f460ff151710289c2f8d4badd8b603b87d610 <632d6baf8884d803e598bf5164008d23fd9b736c; version=1a1f460ff151710289c2f8d4badd8b603b87d610 <9c46c49ad3ffe84121715d392b5a0a94f9f10669; version=1a1f460ff151710289c2f8d4badd8b603b87d610 <aca3b0fa3d04b40c96934d86cc224cccfa7ea8e0; version=1a1f460ff151710289c2f8d4badd8b603b87d610 <d1b9b3191697a80aca8e247320eba46f24d41d18; version=1a1f460ff151710289c2f8d4badd8b603b87d610 <e97ff11b396c320d2cc025b09741ba432fcb20a2; version=4.19

Published CVSS scores

3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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