CVE-2024-56722

Local CPU hang via unthrottled reset logging

Published Dec 29, 2024 · Updated May 11, 2026

Resource exhaustion in the Linux HNS RoCE driver allows local users to stall a CPU during device reset through excessive error logging. The QP, CQ, MR, SRQ, and HEM destruction paths emit an unbounded flood of error messages when reset-time cleanup commands fail. Reachability requires local low-privileged access and an HNS RoCE device with enough resources to produce repeated cleanup failures; the bounded impact is a CPU hang without reported confidentiality or integrity loss.

CVSS severity5.5
Medium
EPSS probability0.22%
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 the Linux HNS RoCE driver allows local users to stall a CPU during device reset through excessive error logging. The QP, CQ, MR, SRQ, and HEM destruction paths emit an unbounded flood of error messages when reset-time cleanup commands fail. Reachability requires local low-privileged access and an HNS RoCE device with enough resources to produce repeated cleanup failures; the bounded impact is a CPU hang without reported confidentiality or integrity loss.

The record

CVE
CVE-2024-56722
Published
Dec 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-770, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 29, 2024CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.9
  2. Affected versionversion=9a4435375cd151e07c0c38fa601b00115986091b <31c6fe9b79ed42440094f2367897aea0c0ce96ec
  3. Affected versionversion=9a4435375cd151e07c0c38fa601b00115986091b <323275ac2ff15b2b7b3eac391ae5d8c5a3c3a999
  4. Affected versionversion=9a4435375cd151e07c0c38fa601b00115986091b <a0e4c78770faa0d56d47391476fe1d827e72eded
  5. Affected versionversion=9a4435375cd151e07c0c38fa601b00115986091b <b4ba31e5aaffbda9b22d9a35c40b16dc39e475a6
  6. Affected versionversion=9a4435375cd151e07c0c38fa601b00115986091b <e2e64f9c42c717beb459ab209ec1c4baa73d3760

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.9; version=9a4435375cd151e07c0c38fa601b00115986091b <31c6fe9b79ed42440094f2367897aea0c0ce96ec; version=9a4435375cd151e07c0c38fa601b00115986091b <323275ac2ff15b2b7b3eac391ae5d8c5a3c3a999; version=9a4435375cd151e07c0c38fa601b00115986091b <a0e4c78770faa0d56d47391476fe1d827e72eded; version=9a4435375cd151e07c0c38fa601b00115986091b <b4ba31e5aaffbda9b22d9a35c40b16dc39e475a6; version=9a4435375cd151e07c0c38fa601b00115986091b <e2e64f9c42c717beb459ab209ec1c4baa73d3760

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

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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