CVE-2023-54028

Kernel crash via uninitialized RDMA task spinlock

Published Dec 24, 2025 · Updated Dec 24, 2025

Denial of service in the Linux kernel RDMA/rxe driver allows local users to crash the kernel through failed queue-pair creation. rxe_create_qp can enter its error unwind before rxe_init_task initializes a task spinlock, yet cleanup reaches rxe_cleanup_task and accesses that uninitialized lock. Access to the software RoCE device and a queue-pair creation failure are required; the documented consequence is a kernel oops and service interruption.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel RDMA/rxe driver allows local users to crash the kernel through failed queue-pair creation. rxe_create_qp can enter its error unwind before rxe_init_task initializes a task spinlock, yet cleanup reaches rxe_cleanup_task and accesses that uninitialized lock. Access to the software RoCE device and a queue-pair creation failure are required; the documented consequence is a kernel oops and service interruption.

The record

CVE
CVE-2023-54028
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=4.8
  2. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <0d938264fcfe4927e54f0e519da05af1d5d720b4
  3. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <3236221bb8e4de8e3d0c8385f634064fb26b8e38
  4. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <b2b1ddc457458fecd1c6f385baa9fbda5f0c63ad
  5. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <c8473cd5b301279a41dc75e5afb26b3d5223b6c7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.8; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <0d938264fcfe4927e54f0e519da05af1d5d720b4; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <3236221bb8e4de8e3d0c8385f634064fb26b8e38; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <b2b1ddc457458fecd1c6f385baa9fbda5f0c63ad; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <c8473cd5b301279a41dc75e5afb26b3d5223b6c7

Published CVSS scores

5.5Amazon LinuxCVSS: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 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.

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Technologies

Your stack

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Your stack

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