Bug 2323950 (CVE-2024-50101)

Summary:	CVE-2024-50101 kernel: iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Bug Depends On:	2324007
Bug Blocks:

Description OSIDB Bzimport 2024-11-05 18:04:08 UTC

In the Linux kernel, the following vulnerability has been resolved:

iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices

Previously, the domain_context_clear() function incorrectly called
pci_for_each_dma_alias() to set up context entries for non-PCI devices.
This could lead to kernel hangs or other unexpected behavior.

Add a check to only call pci_for_each_dma_alias() for PCI devices. For
non-PCI devices, domain_context_clear_one() is called directly.

Comment 1 Robb Gatica 2024-11-05 20:50:53 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110526-CVE-2024-50101-d1bb@gregkh/T

Comment 2 errata-xmlrpc 2025-05-13 08:33:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966