CVE-2023-54009

Local service interruption via runtime PM leak

Published Dec 24, 2025 · Updated Dec 24, 2025

Availability flaw in the Linux kernel Cadence I2C driver allows local users to interrupt I2C service through the driver's error path. In cdns_i2c_master_xfer(), one direct error return bypasses the matching runtime PM reference release, so each reachable failure leaves the usage count elevated. Local low-privileged access and the affected Cadence I2C driver are required; repeated failures affect availability without reported data disclosure or modification.

CVSS severity4.8
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Availability flaw in the Linux kernel Cadence I2C driver allows local users to interrupt I2C service through the driver's error path. In cdns_i2c_master_xfer(), one direct error return bypasses the matching runtime PM reference release, so each reachable failure leaves the usage count elevated. Local low-privileged access and the affected Cadence I2C driver are required; repeated failures affect availability without reported data disclosure or modification.

The record

CVE
CVE-2023-54009
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <2d65599ad1e4f195bbb80752cd5cbc2f1a018dba
  2. Affected versionversion=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <5b14d7c6ba0ba5d167f5ef588ca6dfe1af6dd0aa
  3. Affected versionversion=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <a712b5a95270e62209f5c2201c774f708f75234e
  4. Affected versionversion=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <ae1664f04f504a998737f5bb563f16b44357bcca
  5. Affected versionversion=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <d0dc6553b5f2b1272c01b0eba5fe2fd89cc59f44
  6. Affected versionversion=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <fd7bf900c3215c77f6d779d1532faa22b79f2430
  7. Affected versionversion=5.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <2d65599ad1e4f195bbb80752cd5cbc2f1a018dba; version=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <5b14d7c6ba0ba5d167f5ef588ca6dfe1af6dd0aa; version=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <a712b5a95270e62209f5c2201c774f708f75234e; version=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <ae1664f04f504a998737f5bb563f16b44357bcca; version=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <d0dc6553b5f2b1272c01b0eba5fe2fd89cc59f44; version=1a351b10b9671fc2fac767c40a1c4373b9bf5092 <fd7bf900c3215c77f6d779d1532faa22b79f2430; version=5.8

Published CVSS scores

4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

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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