CVE-2024-26738

kernel: powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · April 3, 2024

Updated · November 21, 2025

Description

A vulnerability was found in the Linux kernel, occurring during the Dynamic Logical Partitioning (DLPAR) add of a PCI device. The iommu_device structure is not properly initialized and this leads to a NULL pointer dereference which can cause kernel crashes.

Statement

Red Hat Enterprise Linux 8 and 9 are not affected by this vulnerability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference