Bug 2425168 (CVE-2022-50777)

Summary: CVE-2022-50777 kernel: Kernel: Denial of Service due to reference count leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the Linux kernel. A local attacker with low privileges and physical access could exploit a reference count leak in the `xgmiitorgmii_probe` function. This vulnerability could lead to resource exhaustion, resulting in a Denial of Service (DoS), which means the system may become unresponsive or crash.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-12-24 14:08:05 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: phy: xgmiitorgmii: Fix refcount leak in xgmiitorgmii_probe

of_phy_find_device() return device node with refcount incremented.
Call put_device() to relese it when not needed anymore.
Comment 1 Alexander B 2025-12-24 21:33:07 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122400-CVE-2022-50777-d1e3@gregkh/T