CVE-2020-36783

Service interruption via leaked runtime power references

Published Feb 28, 2024 · Updated May 11, 2026

Resource leak in the Linux kernel allows local users to interrupt service by triggering failed IMG SCB I2C transfers. The img_i2c_xfer and img_i2c_init paths call pm_runtime_get_sync, which increments the runtime PM usage counter when resume fails, without balancing that reference. Reachability requires an IMG SCB I2C controller and a failed runtime-power resume; repeated failures leave references elevated and exhaust availability.

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

Resource leak in the Linux kernel allows local users to interrupt service by triggering failed IMG SCB I2C transfers. The img_i2c_xfer and img_i2c_init paths call pm_runtime_get_sync, which increments the runtime PM usage counter when resume fails, without balancing that reference. Reachability requires an IMG SCB I2C controller and a failed runtime-power resume; repeated failures leave references elevated and exhaust availability.

The record

CVE
CVE-2020-36783
Published
Feb 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 2024CVE 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=4.15
  2. Affected versionversion=93222bd9b966105f43418fd336654ad10045783a <223125e37af8a641ea4a09747a6a52172fc4b903
  3. Affected versionversion=93222bd9b966105f43418fd336654ad10045783a <4734c4b1d9573c9d20bbc46cf37dde095ee011b8
  4. Affected versionversion=93222bd9b966105f43418fd336654ad10045783a <7ee35cde1e810ad6ca589980b9ec2b7b62946a5b
  5. Affected versionversion=93222bd9b966105f43418fd336654ad10045783a <96c4a03658d661666c360959aa80cdabfe2972ed
  6. Affected versionversion=93222bd9b966105f43418fd336654ad10045783a <e80ae8bde41266d3b8bf012460b6593851766006

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=93222bd9b966105f43418fd336654ad10045783a <223125e37af8a641ea4a09747a6a52172fc4b903; version=93222bd9b966105f43418fd336654ad10045783a <4734c4b1d9573c9d20bbc46cf37dde095ee011b8; version=93222bd9b966105f43418fd336654ad10045783a <7ee35cde1e810ad6ca589980b9ec2b7b62946a5b; version=93222bd9b966105f43418fd336654ad10045783a <96c4a03658d661666c360959aa80cdabfe2972ed; version=93222bd9b966105f43418fd336654ad10045783a <e80ae8bde41266d3b8bf012460b6593851766006

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.

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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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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