CVE-2022-50663

Service degradation via probe error-path memory leak

Published Dec 9, 2025 · Updated May 11, 2026

Resource-management failure in the Linux kernel allows local users to degrade service by triggering a probe-path memory leak. In stmmac_dvr_probe(), a failed workqueue creation returns without freeing the previously allocated priv->af_xdp_zc_qps bitmap. The path requires the stmmac driver and a workqueue-creation failure; public sources do not establish reliable attacker control or a resulting crash.

CVSS severity7.0
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource-management failure in the Linux kernel allows local users to degrade service by triggering a probe-path memory leak. In stmmac_dvr_probe(), a failed workqueue creation returns without freeing the previously allocated priv->af_xdp_zc_qps bitmap. The path requires the stmmac driver and a workqueue-creation failure; public sources do not establish reliable attacker control or a resulting crash.

The record

CVE
CVE-2022-50663
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.13
  2. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <446757787baf99b7db15cb347783c45a37bfe21f
  3. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <96e50897029f65222ef76cfe9bc802321fcea33b
  4. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <a137f3f27f9290933fe7e40e6dc8a445781c31a2
  5. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <b59253e32c203a20bce15dca80890b7d268bacd7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <446757787baf99b7db15cb347783c45a37bfe21f; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <96e50897029f65222ef76cfe9bc802321fcea33b; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <a137f3f27f9290933fe7e40e6dc8a445781c31a2; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <b59253e32c203a20bce15dca80890b7d268bacd7

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo