CVE-2022-50479

Service interruption via unreleased clock-source allocation

Published Oct 4, 2025 · Updated Oct 4, 2025

Memory leak in the AMD display driver in Linux 5.11 through 6.0.2 allows local users to interrupt service by exhausting memory. dcn30_clock_source_create allocates clk_src but returns NULL without freeing it when clock-source construction reaches its final failure path. Local low-privileged access is required; repeated triggering can exhaust kernel memory and interrupt service, with no reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the AMD display driver in Linux 5.11 through 6.0.2 allows local users to interrupt service by exhausting memory. dcn30_clock_source_create allocates clk_src but returns NULL without freeing it when clock-source construction reaches its final failure path. Local low-privileged access is required; repeated triggering can exhaust kernel memory and interrupt service, with no reported data disclosure or modification.

The record

CVE
CVE-2022-50479
Published
Oct 4, 2025
Updated
Oct 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6160216fd2c97107e8a9ab39863b056d677fcd85
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a6e6ab9caeac96b277a3fe7da1dfa8f69a591759

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6160216fd2c97107e8a9ab39863b056d677fcd85; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a6e6ab9caeac96b277a3fe7da1dfa8f69a591759

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/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.

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

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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