CVE-2026-19442: Vulnerabilities in IBM AIX and PowerVM VIOS

Published Aug 15, 2026
·
Updated

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 has a pointer validation flaw exists in the AIX Virtual SCSI (vSCSI) initiator driver. Successful exploitation may result in denial of service, privilege escalation, or full compromise of the client LPAR kernel.

Affected Software

10 affected components
IBM AIX<=7.2
IBM AIX<=7.3
IBM PowerVM VIOS<=4.1
IBM VIOS>=4.1.0<4.1.0.50
IBM VIOS>=4.1.1.0<4.1.1.30
IBM VIOS>=4.1.2.0<4.1.2.20
IBM AIX>=7.2.5<=7.2.5.212
IBM AIX>=7.3.2<=7.3.2.5
IBM AIX>=7.3.3<=7.3.3.2
IBM AIX>=7.3.4<=7.3.4.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM AIX 7.3 TL04 to a version that resolves this vulnerability.

    Fixed in AIX 7.3 TL04SP2
  2. Upgrade

    Upgrade IBM AIX 7.3 TL03 to a version that resolves this vulnerability.

    Fixed in AIX 7.3 TL03SP3
  3. Upgrade

    Upgrade IBM AIX 7.3 TL02 to a version that resolves this vulnerability.

    Fixed in AIX 7.3 TL02SP5
  4. Upgrade

    Upgrade IBM PowerVM VIOS 4.1.0 to a version that resolves this vulnerability.

    Fixed in 4.1.0.50
  5. Upgrade

    Upgrade IBM PowerVM VIOS 4.1.1 to a version that resolves this vulnerability.

    Fixed in 4.1.1.30Patch key_w_apar4.1.1IJ5956408/14/2026
  6. Upgrade

    Upgrade IBM PowerVM VIOS 4.1.2 to a version that resolves this vulnerability.

    Fixed in 4.1.2.20Patch key_w_apar4.1.2IJ5956308/14/2026
  7. Operational

    Reboot the LPAR required to complete the SP/FP update.

Event History

Aug 15, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Aug 20, 2026
CVE Published
via MITRE·10:03 PM
Data Sourced
via MITRE·10:03 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Which systems are in scope for this issue?

The listed affected products are IBM AIX and IBM PowerVM VIOS. The flaw is in the AIX Virtual SCSI initiator driver and affects the client LPAR kernel.

Company

Resources

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