CVE-2022-50505: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.14 — 4.14.303
linux	linux_kernel	4.15 — 4.19.270
linux	linux_kernel	4.20 — 5.4.229
linux	linux_kernel	5.5 — 5.10.163
linux	linux_kernel	5.11 — 5.15.86
linux	linux_kernel	5.16 — 6.0.16
linux	linux_kernel	6.1 — 6.1.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2022-50505? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50505? +

CVE-2022-50505 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-50505? +

CVE-2022-50505 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-50505? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-50505