CVE-2024-50101

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.

Affected Software

References

• https://git.kernel.org/stable/c/04d6826ba7ba81213422276e96c90c6565169e1c
• https://git.kernel.org/stable/c/0bd9a30c22afb5da203386b811ec31429d2caa78
• https://git.kernel.org/stable/c/6e02a277f1db24fa039e23783c8921c7b0e5b1b3
• https://git.kernel.org/stable/c/cbfa3a83eba05240ce37839ed48280a05e8e8f6c
• https://git.kernel.org/stable/c/fe2e0b6cd00abea3efac66de1da22d844364c1b0