CVE-2022-50868
hwrng: amd - Fix PCI device refcount leak
Description
In the Linux kernel, the following vulnerability has been resolved: hwrng: amd - Fix PCI device refcount leak for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the normal and error path.
INFO
Published Date :
Dec. 30, 2025, 1:16 p.m.
Last Modified :
Dec. 30, 2025, 1:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2022-50868
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the Linux kernel patch.
- Ensure pci_dev_put() is called.
- Address normal and error paths.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-50868.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50868 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50868
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-50868 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50868 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 30, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: hwrng: amd - Fix PCI device refcount leak for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the normal and error path. Added Reference https://git.kernel.org/stable/c/1199f8e02941b326c60ab71a63002b7c80e38212 Added Reference https://git.kernel.org/stable/c/2b79a5e560779b35e1164d57ae35c48b43373082 Added Reference https://git.kernel.org/stable/c/2e10ecd012ae2b2a374b34f307e9bc1e6096c03d Added Reference https://git.kernel.org/stable/c/526c316948819d3ecd2bb20fe5e2580c51a1b760 Added Reference https://git.kernel.org/stable/c/5998e5c30e839f73e62cb29e0d9617b0d16ccba3 Added Reference https://git.kernel.org/stable/c/cb348c7908631dd9f60083a0a1542eab055d3edf Added Reference https://git.kernel.org/stable/c/e246f5eff26055bdcb61a2cc99c50af72a19680f Added Reference https://git.kernel.org/stable/c/ecadb5b0111ea19fc7c240bb25d424a94471eb7d Added Reference https://git.kernel.org/stable/c/f1c97f72ffd504f49882774e2ab689d982dc7afc