What’s Vulnerable › Vulnerabilities

CVE-2022-50505: iommu/amd: Fix pci device refcount leak in ppr_notifier()

• 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: 2025-10-04 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix pci device refcount leak in ppr_notifier() As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). So call it before returning from ppr_notifier() to avoid refcount leak.

Affected products

• Linux kernel: from 4.14 before 4.14.303; from 4.15 before 4.19.270; from 4.20 before 5.4.229; from 5.5 before 5.10.163; from 5.11 before 5.15.86; from 5.16 before 6.0.16 — fixed in 4.14.303, 4.19.270, 5.10.163, 5.15.86, 5.4.229, 6.0.16

How to fix

Upgrade to a fixed version: Linux kernel 4.14.303, 4.19.270, 5.10.163, 5.15.86. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/03f51c72997559e73b327608f0cccfded715c9a0
• https://git.kernel.org/stable/c/6cf0981c2233f97d56938d9d61845383d6eb227c
• https://git.kernel.org/stable/c/6e501b3fd7a2e1c4372d72bc70717aaca2beb8a5
• https://git.kernel.org/stable/c/8581ec1feb895ff596fe3d326d9ba320083290aa
• https://git.kernel.org/stable/c/902cc2507091a81643502d8ceb0e2f105e902518
• https://git.kernel.org/stable/c/b0637f4bd426925f5c3a15e8f8e36190fe06bac5
• https://git.kernel.org/stable/c/bdb2113dd8f17a3cc84a2b4be4968a849f69ec72
• https://git.kernel.org/stable/c/efd50c65fd1cdef63eb58825f3fe72496443764c

Get alerted when CVE-2022-50505 or the next vulnerability affects your stack