CVE-2022-50176

Device-node reference leak via failed bridge binding

Published Jun 18, 2025 · Updated May 11, 2026

A reference-count leak in the Linux MCDE display driver allows local users to retain device-node references via unspecified vectors. The mcde_dsi_bind function returns after of_drm_find_bridge fails without calling of_node_put on the child acquired by for_each_available_child_of_node. Reachability requires an MCDE-equipped Ux500 system and a DSI child whose bridge lookup fails; published sources do not establish how a local user triggers that state or a resulting service impact.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A reference-count leak in the Linux MCDE display driver allows local users to retain device-node references via unspecified vectors. The mcde_dsi_bind function returns after of_drm_find_bridge fails without calling of_node_put on the child acquired by for_each_available_child_of_node. Reachability requires an MCDE-equipped Ux500 system and a DSI child whose bridge lookup fails; published sources do not establish how a local user triggers that state or a resulting service impact.

The record

CVE
CVE-2022-50176
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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

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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=5.3
  2. Affected versionversion=5fc537bfd00033a3f813330175f7f12c25957ebf <3123ae6fdd4013d24a3a4877084b14e917faae5c
  3. Affected versionversion=5fc537bfd00033a3f813330175f7f12c25957ebf <32c827e30bb44ae809950a9efab59e98e44d30e5
  4. Affected versionversion=5fc537bfd00033a3f813330175f7f12c25957ebf <3a149169e4a2f9127022fec6ef5d71b4e804b3b9
  5. Affected versionversion=5fc537bfd00033a3f813330175f7f12c25957ebf <7214902de5b1fb2b632a7b8b3b9540e41aabab38
  6. Affected versionversion=5fc537bfd00033a3f813330175f7f12c25957ebf <87c35bbefdfa3c5edfb8c80f5c04717aaacc629d
  7. Affected versionversion=5fc537bfd00033a3f813330175f7f12c25957ebf <f57699a9b66ea11f000f56d1f1179059239b8690

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.3; version=5fc537bfd00033a3f813330175f7f12c25957ebf <3123ae6fdd4013d24a3a4877084b14e917faae5c; version=5fc537bfd00033a3f813330175f7f12c25957ebf <32c827e30bb44ae809950a9efab59e98e44d30e5; version=5fc537bfd00033a3f813330175f7f12c25957ebf <3a149169e4a2f9127022fec6ef5d71b4e804b3b9; version=5fc537bfd00033a3f813330175f7f12c25957ebf <7214902de5b1fb2b632a7b8b3b9540e41aabab38; version=5fc537bfd00033a3f813330175f7f12c25957ebf <87c35bbefdfa3c5edfb8c80f5c04717aaacc629d; version=5fc537bfd00033a3f813330175f7f12c25957ebf <f57699a9b66ea11f000f56d1f1179059239b8690

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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

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Your stack

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