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CVE-2025-38625: vfio/pds: Fix missing detach_ioas op

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-22 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: vfio/pds: Fix missing detach_ioas op When CONFIG_IOMMUFD is enabled and a device is bound to the pds_vfio_pci driver, the following WARN_ON() trace is seen and probe fails: WARNING: CPU: 0 PID: 5040 at drivers/vfio/vfio_main.c:317 __vfio_register_dev+0x130/0x140 [vfio] <...> pds_vfio_pci 0000:08:00.1: probe with driver pds_vfio_pci failed with error -22 This is because the driver's vfio_device_ops.detach_ioas isn't set. Fix this by using the generic vfio_iommufd_physical_detach_ioas function.

Affected products

• Linux kernel: from 6.6 before 6.6.102; from 6.7 before 6.12.42; from 6.13 before 6.15.10; from 6.16 before 6.16.1 — fixed in 6.12.42, 6.15.10, 6.16.1, 6.6.102

How to fix

Upgrade to a fixed version: Linux kernel 6.12.42, 6.15.10, 6.16.1, 6.6.102. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1df8150ab4cc422bddfbd312d6758c50b688a971
• https://git.kernel.org/stable/c/7dbfae90c5a33f6b694e7068bc9522cc2655373d
• https://git.kernel.org/stable/c/88b962fbd0ac30a65d2869c68d2f145be46ebe4d
• https://git.kernel.org/stable/c/b265dff9fcf047f660976a5c92c83e7c414a2d95
• https://git.kernel.org/stable/c/fe24d5bc635e103a517ec201c3cb571eeab8be2f

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