CVE-2024-42159

Kernel compromise via oversized SAS PHY count

Published Jul 30, 2024 · Updated May 11, 2026

Improper bounds checking in the Linux kernel mpi3mr SCSI driver allows local users to compromise the kernel via oversized SAS topology data. mpi3mr_sas_port_add accepts mr_sas_node->num_phys values beyond the 64-bit mr_sas_port->phy_mask capacity and shifts those indices into the mask. The affected path requires the mpi3mr driver and compatible Broadcom MPI3 storage hardware; oversized counts produce invalid mask operations, and no end-to-end exploit is published.

CVSS severity7.8
High
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

Improper bounds checking in the Linux kernel mpi3mr SCSI driver allows local users to compromise the kernel via oversized SAS topology data. mpi3mr_sas_port_add accepts mr_sas_node->num_phys values beyond the 64-bit mr_sas_port->phy_mask capacity and shifts those indices into the mask. The affected path requires the mpi3mr driver and compatible Broadcom MPI3 storage hardware; oversized counts produce invalid mask operations, and no end-to-end exploit is published.

The record

CVE
CVE-2024-42159
Published
Jul 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-754
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 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

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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=6.1
  2. Affected versionversion=fc7212fd3100920fea711a80482d967388a4603c <3668651def2c1622904e58b0280ee93121f2b10b
  3. Affected versionversion=fc7212fd3100920fea711a80482d967388a4603c <586b41060113ae43032ec6c4a16d518cef5da6e0
  4. Affected versionversion=fc7212fd3100920fea711a80482d967388a4603c <b869ec89d2ee923d46608b76e54c006680c9b4df
  5. Affected versionversion=fc7212fd3100920fea711a80482d967388a4603c <c8707901b53a48106d7501bdbd0350cefaefa4cf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1; version=fc7212fd3100920fea711a80482d967388a4603c <3668651def2c1622904e58b0280ee93121f2b10b; version=fc7212fd3100920fea711a80482d967388a4603c <586b41060113ae43032ec6c4a16d518cef5da6e0; version=fc7212fd3100920fea711a80482d967388a4603c <b869ec89d2ee923d46608b76e54c006680c9b4df; version=fc7212fd3100920fea711a80482d967388a4603c <c8707901b53a48106d7501bdbd0350cefaefa4cf

Published CVSS scores

7.8NIST NVDCVSS: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-754Improper Check for Unusual or Exceptional Conditions

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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