CVE-2022-50868
Published Dec 30, 2025
Modified Apr 15, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/1199f8e02941b326c60ab71a63002b7c80e38212
https://git.kernel.org/stable/c/2b79a5e560779b35e1164d57ae35c48b43373082
https://git.kernel.org/stable/c/2e10ecd012ae2b2a374b34f307e9bc1e6096c03d
https://git.kernel.org/stable/c/526c316948819d3ecd2bb20fe5e2580c51a1b760
https://git.kernel.org/stable/c/5998e5c30e839f73e62cb29e0d9617b0d16ccba3
https://git.kernel.org/stable/c/cb348c7908631dd9f60083a0a1542eab055d3edf
https://git.kernel.org/stable/c/e246f5eff26055bdcb61a2cc99c50af72a19680f
https://git.kernel.org/stable/c/ecadb5b0111ea19fc7c240bb25d424a94471eb7d
https://git.kernel.org/stable/c/f1c97f72ffd504f49882774e2ab689d982dc7afc
Frequently Asked Questions
What is CVE-2022-50868? +
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.
How do I check if I'm vulnerable to CVE-2022-50868? +
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.