CVE-2024-27030

Data corruption via shared mailbox interrupt handler

Published May 1, 2024 · Updated Aug 5, 2026

Race condition in the Linux octeontx2 AF driver before 6.9 allows local users to corrupt data by triggering concurrent mailbox interrupts. The interrupt setup registers one handler for both PF-to-AF and VF-to-AF vectors, allowing two CPUs to process the same mailbox event concurrently. Local access to a Marvell OcteonTX2 host with enabled PF/VF mailbox paths is required; simultaneous events corrupt kernel-managed data.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux octeontx2 AF driver before 6.9 allows local users to corrupt data by triggering concurrent mailbox interrupts. The interrupt setup registers one handler for both PF-to-AF and VF-to-AF vectors, allowing two CPUs to process the same mailbox event concurrently. Local access to a Marvell OcteonTX2 host with enabled PF/VF mailbox paths is required; simultaneous events corrupt kernel-managed data.

The record

CVE
CVE-2024-27030
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, CAPEC-26, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=4.20
  2. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <29d2550d79a8cbd31e0fbaa5c0e2a2efdc444e44
  3. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <4fedae8f9eafa2ac8cdaca58e315f52a7e2a8701
  4. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <50e60de381c342008c0956fd762e1c26408f372c
  5. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <766c2627acb2d9d1722cce2e24837044d52d888a
  6. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <772f18ded0e240cc1fa2b7020cc640e3e5c32b70
  7. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <94cb17e5cf3a3c484063abc0ce4b8a2b2e8c1cb2
  8. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <ad6759e233db6fcc131055f8e23b4eafbe81053c
  9. Affected versionversion=7304ac4567bcb72fd57cc79582bf53ca7840136f <dc29dd00705a62c77de75b6d752259b869aac49d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.20; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <29d2550d79a8cbd31e0fbaa5c0e2a2efdc444e44; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <4fedae8f9eafa2ac8cdaca58e315f52a7e2a8701; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <50e60de381c342008c0956fd762e1c26408f372c; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <766c2627acb2d9d1722cce2e24837044d52d888a; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <772f18ded0e240cc1fa2b7020cc640e3e5c32b70; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <94cb17e5cf3a3c484063abc0ce4b8a2b2e8c1cb2; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <ad6759e233db6fcc131055f8e23b4eafbe81053c; version=7304ac4567bcb72fd57cc79582bf53ca7840136f <dc29dd00705a62c77de75b6d752259b869aac49d

Published CVSS scores

6.3NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8Linux Kernel CNACVSS:3.1/AV:L/AC:L/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.

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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC-26Leveraging Race Conditions
T1499.004Endpoint Denial of Service: Application 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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