CVE-2022-50777

Service interruption via probe-path reference leak

Published Dec 24, 2025 · Updated Dec 24, 2025

Resource leak in the Xilinx GMII-to-RGMII PHY driver in affected Linux kernels allows local users to interrupt service through device probing. The xgmiitorgmii_probe function obtains a referenced PHY device with of_phy_find_device but omits put_device after use, retaining each device reference. Triggering the affected probe path requires local low-privileged access and the relevant Xilinx PHY configuration; repeated leaks can exhaust resources and disrupt availability.

CVSS severity4.7
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Xilinx GMII-to-RGMII PHY driver in affected Linux kernels allows local users to interrupt service through device probing. The xgmiitorgmii_probe function obtains a referenced PHY device with of_phy_find_device but omits put_device after use, retaining each device reference. Triggering the affected probe path requires local low-privileged access and the relevant Xilinx PHY configuration; repeated leaks can exhaust resources and disrupt availability.

The record

CVE
CVE-2022-50777
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3f7056e1822d648f8022997497edc6cad2ad1e73 <53526dbc8aa6b95e9fc2ab1e29b1a9145721da24
  2. Affected versionversion=4.19
  3. Affected versionversion=900812a0d318954400d20b0190c7d788b4ff2cc2
  4. Affected versionversion=a5a849c9e8a6c357f84a5e249cb468f20da6d28f
  5. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <00616bd1913a4f879679e02dc08c2f501ca2bd4c
  6. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <106d0d33c9d1ec4ddeeffc1fdc717ff09953d4ed
  7. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <4d112f001612c79927c1ecf29522b34c4fa292e0
  8. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <52841e71253e6ace72751c72560950474a57d04c
  9. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <78b0b1ff525d9be4babf5a148a4de0d50042d95d
  10. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <d039535850ee47079d59527e96be18d8e0daa84b
  11. Affected versionversion=ab4e6ee578e88a659938db8fbf33720bc048d29c <ee84d37a5f08ed1121cdd16f8f3ed87552087a21

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3f7056e1822d648f8022997497edc6cad2ad1e73 <53526dbc8aa6b95e9fc2ab1e29b1a9145721da24; version=4.19; version=900812a0d318954400d20b0190c7d788b4ff2cc2; version=a5a849c9e8a6c357f84a5e249cb468f20da6d28f; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <00616bd1913a4f879679e02dc08c2f501ca2bd4c; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <106d0d33c9d1ec4ddeeffc1fdc717ff09953d4ed; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <4d112f001612c79927c1ecf29522b34c4fa292e0; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <52841e71253e6ace72751c72560950474a57d04c; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <78b0b1ff525d9be4babf5a148a4de0d50042d95d; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <d039535850ee47079d59527e96be18d8e0daa84b; version=ab4e6ee578e88a659938db8fbf33720bc048d29c <ee84d37a5f08ed1121cdd16f8f3ed87552087a21

Published CVSS scores

5.7SUSECVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation Flaws

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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