CVE-2023-54274

Kernel crash via invalid MAD agent pointer

Published Dec 30, 2025 · Updated Dec 30, 2025

NULL-pointer dereference in the Linux RDMA/srpt module allows local users to crash the kernel during concurrent RDMA device removal. A race between srpt_add_one() and srpt_remove_one() leaves sport->mad_agent holding an error value, but srpt_unregister_mad_agent() checks only for non-null before passing it to ib_unregister_mad_agent(). The crash requires the RDMA target module and a RoCE driver unregistering its ib_device during the short race window; the demonstrated consequence is a kernel oops and service interruption.

CVSS severity7.0
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in the Linux RDMA/srpt module allows local users to crash the kernel during concurrent RDMA device removal. A race between srpt_add_one() and srpt_remove_one() leaves sport->mad_agent holding an error value, but srpt_unregister_mad_agent() checks only for non-null before passing it to ib_unregister_mad_agent(). The crash requires the RDMA target module and a RoCE driver unregistering its ib_device during the short race window; the demonstrated consequence is a kernel oops and service interruption.

The record

CVE
CVE-2023-54274
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=3.3
  2. Affected versionversion=a42d985bd5b234da8b61347a78dc3057bf7bb94d <00cc21e32ea1b8ebbabf5d645da9378d986bf8ba
  3. Affected versionversion=a42d985bd5b234da8b61347a78dc3057bf7bb94d <4323aaedeba32076e652aad056afd7885bb96bb7
  4. Affected versionversion=a42d985bd5b234da8b61347a78dc3057bf7bb94d <5f6ef2a574b0e0e0ea46ed0022575442df9d0bf9
  5. Affected versionversion=a42d985bd5b234da8b61347a78dc3057bf7bb94d <8ec6acdb9b6a80eeb13e778dfedb5d72a88f14fe
  6. Affected versionversion=a42d985bd5b234da8b61347a78dc3057bf7bb94d <b713623bfef8cb1df9c769a3887fa10db63d1c54
  7. Affected versionversion=a42d985bd5b234da8b61347a78dc3057bf7bb94d <eca5cd9474cd26d62f9756f536e2e656d3f62f3a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.3; version=a42d985bd5b234da8b61347a78dc3057bf7bb94d <00cc21e32ea1b8ebbabf5d645da9378d986bf8ba; version=a42d985bd5b234da8b61347a78dc3057bf7bb94d <4323aaedeba32076e652aad056afd7885bb96bb7; version=a42d985bd5b234da8b61347a78dc3057bf7bb94d <5f6ef2a574b0e0e0ea46ed0022575442df9d0bf9; version=a42d985bd5b234da8b61347a78dc3057bf7bb94d <8ec6acdb9b6a80eeb13e778dfedb5d72a88f14fe; version=a42d985bd5b234da8b61347a78dc3057bf7bb94d <b713623bfef8cb1df9c769a3887fa10db63d1c54; version=a42d985bd5b234da8b61347a78dc3057bf7bb94d <eca5cd9474cd26d62f9756f536e2e656d3f62f3a

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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

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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