CVE-2026-53030

Service interruption via unreleased I3C transfers

Published Jun 24, 2026 · Updated Jun 24, 2026

Memory leak in the Renesas I3C master driver in Linux Kernel allows local users to exhaust kernel memory through repeated I3C transfers. renesas_i3c_i3c_xfers() allocates an xfer object with renesas_i3c_alloc_xfer() but returns without releasing that allocation. Exploitation requires local low-privileged access and an active Renesas I3C master driver; accumulated leaks can interrupt the system without reading or altering data.

CVSS severity5.5
Medium
EPSS probability0.12%
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 Renesas I3C master driver in Linux Kernel allows local users to exhaust kernel memory through repeated I3C transfers. renesas_i3c_i3c_xfers() allocates an xfer object with renesas_i3c_alloc_xfer() but returns without releasing that allocation. Exploitation requires local low-privileged access and an active Renesas I3C master driver; accumulated leaks can interrupt the system without reading or altering data.

The record

CVE
CVE-2026-53030
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=6.17
  2. Affected versionversion=d028219a9f1485914492bf373406f6a0e665ace2 <1b6a7e94be678d34a9ccb9db7e2443ae02ad2bc8
  3. Affected versionversion=d028219a9f1485914492bf373406f6a0e665ace2 <ab8f00ffcca0f618fb8198d358f24728950d9860
  4. Affected versionversion=d028219a9f1485914492bf373406f6a0e665ace2 <d7665c3b4f575251e449e2656879392346ca612b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.17; version=d028219a9f1485914492bf373406f6a0e665ace2 <1b6a7e94be678d34a9ccb9db7e2443ae02ad2bc8; version=d028219a9f1485914492bf373406f6a0e665ace2 <ab8f00ffcca0f618fb8198d358f24728950d9860; version=d028219a9f1485914492bf373406f6a0e665ace2 <d7665c3b4f575251e449e2656879392346ca612b

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

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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