CVE-2022-50868
kernel: Kernel: Denial of Service in AMD hwrng due to PCI device refcount leak
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 30, 2025
Updated · March 5, 2026
Description
A flaw was found in the Linux kernel's AMD hardware random number generator (hwrng) component. A local user with low privileges could exploit a PCI device reference count (refcount) leak. This occurs when the for_each_pci_dev() loop exits without properly decrementing the PCI device's reference count. This can lead to resource exhaustion and a denial of service (DoS) on the system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime