CVE-2022-50659 Details
Description
In the Linux kernel, the following vulnerability has been resolved: hwrng: geode - 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. We add a new struct 'amd_geode_priv' to record pointer of the pci_dev and membase, and then add missing pci_dev_put() for the normal and error path.
A vulnerability exists in the Linux kernel's Geode hardware random number generator (RNG) driver, specifically in the way PCI device reference counts are managed. The issue arises because the driver fails to properly release references to PCI devices, which can lead to memory management problems. This vulnerability affects the Linux kernel stable tree.
The vulnerability has been addressed in the Linux kernel. Users can upgrade to the latest version of the stable Linux kernel to apply the fix.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Dec 9, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/19b7b85773b18457ff85a9ff4f5e2a2d4bf7ed0c | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/5cc818ad53df650cac8fb41d9066665366af3f03 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/6b9e43c4098f1310f5b4d52121d007a219fa5d43 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/82bd423ed977847652b2048b0f8dcf049b1847a9 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/874f798c2db5ad595e46982d7f727a679dacb048 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/88f4ea623f59155280d99d1a59a968f838472c4a | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/9f6ec8dc574efb7f4f3d7ee9cd59ae307e78f445 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/aa96aff394a511cc7bb7df08d1b8504d4d97671e | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/e2f44baf62567c5cfbc274974c7d96dddad53ccc | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
| |
| AMD Geode HW RNG | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Dec 9, 2025 | New CVE Received | kernel.org |