CVE-2022-50449

Local denial of service via leaked PLL table

Published Oct 1, 2025 · Updated Oct 1, 2025

Memory leak in Samsung clock support in affected Linux kernel versions allows local users to exhaust memory through failed clock registration. The _samsung_clk_register_pll() failure path leaves a rate table allocated by kmemdup() when clk_register() returns an error instead of freeing it. Reachability requires local low-privileged access and execution of the Samsung PLL registration failure path; repeated failures can interrupt service by consuming kernel memory.

CVSS severity5.5
Medium
EPSS probability0.16%
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 Samsung clock support in affected Linux kernel versions allows local users to exhaust memory through failed clock registration. The _samsung_clk_register_pll() failure path leaves a rate table allocated by kmemdup() when clk_register() returns an error instead of freeing it. Reachability requires local low-privileged access and execution of the Samsung PLL registration failure path; repeated failures can interrupt service by consuming kernel memory.

The record

CVE
CVE-2022-50449
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 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=3.12
  2. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <2e8dc0626fe86ae08914478dec1419618c557bc0
  3. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <4887ec922e407b4feaf060c7b099482a5c52dee3
  4. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <4e501a31af8efa593a2f003637b56d00b75dca23
  5. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <5174e5b0d1b669a489524192b6adcbb3c54ebc72
  6. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <7b738276a596fa101d320591e9fa84ea0fc3f713
  7. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <a00b4e0fa27317957536abf8f5d6a96d6cb9d9be
  8. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <a35323218ff32782d051d2643912311a22e07b6a
  9. Affected versionversion=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <da13355bb9961316d124f94dfc7a1385d0fb035a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.12; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <2e8dc0626fe86ae08914478dec1419618c557bc0; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <4887ec922e407b4feaf060c7b099482a5c52dee3; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <4e501a31af8efa593a2f003637b56d00b75dca23; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <5174e5b0d1b669a489524192b6adcbb3c54ebc72; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <7b738276a596fa101d320591e9fa84ea0fc3f713; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <a00b4e0fa27317957536abf8f5d6a96d6cb9d9be; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <a35323218ff32782d051d2643912311a22e07b6a; version=3ff6e0d8d64d594a551b5c4904e4b617bf7eee22 <da13355bb9961316d124f94dfc7a1385d0fb035a

Published CVSS scores

5.5CanonicalCVSS: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.

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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

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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