CVE-2024-42110

System instability via preemptible interrupt-only receive call

Published Jul 30, 2024 · Updated Aug 5, 2026

Improper execution-context handling in Linux 3.9 and later allows attackers to destabilize the system during NTB packet reception. ntb_netdev_rx_handler() calls interrupt-only __netif_rx() from the preemptible threaded completion handler used when idxd supplies DMA. Exposure requires ntb_netdev and ntb_transport with the idxd data mover; the resulting context violation can cause races and system instability.

CVSS severity5.5
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper execution-context handling in Linux 3.9 and later allows attackers to destabilize the system during NTB packet reception. ntb_netdev_rx_handler() calls interrupt-only __netif_rx() from the preemptible threaded completion handler used when idxd supplies DMA. Exposure requires ntb_netdev and ntb_transport with the idxd data mover; the resulting context violation can cause races and system instability.

The record

CVE
CVE-2024-42110
Published
Jul 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-372
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=3.9
  2. Affected versionversion=548c237c0a9972df5d1afaca38aa733ee577128d <4b3b6c7efee69f077b86ef7f088fb96768e46e1f
  3. Affected versionversion=548c237c0a9972df5d1afaca38aa733ee577128d <858ae09f03677a4ab907a15516893bc2cc79d4c3
  4. Affected versionversion=548c237c0a9972df5d1afaca38aa733ee577128d <e15a5d821e5192a3769d846079bc9aa380139baf
  5. Affected versionversion=548c237c0a9972df5d1afaca38aa733ee577128d <e3af5b14e7632bf12058533d69055393e2d126c9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.9; version=548c237c0a9972df5d1afaca38aa733ee577128d <4b3b6c7efee69f077b86ef7f088fb96768e46e1f; version=548c237c0a9972df5d1afaca38aa733ee577128d <858ae09f03677a4ab907a15516893bc2cc79d4c3; version=548c237c0a9972df5d1afaca38aa733ee577128d <e15a5d821e5192a3769d846079bc9aa380139baf; version=548c237c0a9972df5d1afaca38aa733ee577128d <e3af5b14e7632bf12058533d69055393e2d126c9

Published CVSS scores

7.5Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS: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.

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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

CWE-372Incomplete Internal State Distinction

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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