CVE-2025-38313

Kernel memory corruption via mc_dev double-free

Published Jul 10, 2025 · Updated May 11, 2026

Double-free in the Linux kernel fsl-mc bus driver allows local users to corrupt kernel memory during DPRC device addition. On the device-addition error path, mc_dev aliases a field of a newly allocated mc_bus, but cleanup frees both mc_bus and the aliased mc_dev. Reaching this path requires root or CAP_SYS_ADMIN access to rescan fsl-mc plus an error that the attacker cannot directly invoke; the corruption can crash the host.

CVSS severity7.8
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double-free in the Linux kernel fsl-mc bus driver allows local users to corrupt kernel memory during DPRC device addition. On the device-addition error path, mc_dev aliases a field of a newly allocated mc_bus, but cleanup frees both mc_bus and the aliased mc_dev. Reaching this path requires root or CAP_SYS_ADMIN access to rescan fsl-mc plus an error that the attacker cannot directly invoke; the corruption can crash the host.

The record

CVE
CVE-2025-38313
Published
Jul 10, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 2025CVE 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=4.13
  2. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <12e4431e5078847791936820bd39df9e1ee26d2e
  3. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <1d5baab39e5b09a76870b345cdee7933871b881f
  4. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <3135e03a92f6b5259d0a7f25f728e9e7866ede3f
  5. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <4b23c46eb2d88924b93aca647bde9a4b9cf62cf9
  6. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <7002b954c4a8b9965ba0f139812ee4a6f71beac8
  7. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <873d47114fd5e5a1cad2018843671537cc71ac84
  8. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <b2057374f326303c86d8423415ab58656eebc695
  9. Affected versionversion=a042fbed02904493ae6df26ec836045f5a7d3ce2 <d694bf8a9acdbd061596f3e7549bc8cb70750a60

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <12e4431e5078847791936820bd39df9e1ee26d2e; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <1d5baab39e5b09a76870b345cdee7933871b881f; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <3135e03a92f6b5259d0a7f25f728e9e7866ede3f; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <4b23c46eb2d88924b93aca647bde9a4b9cf62cf9; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <7002b954c4a8b9965ba0f139812ee4a6f71beac8; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <873d47114fd5e5a1cad2018843671537cc71ac84; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <b2057374f326303c86d8423415ab58656eebc695; version=a042fbed02904493ae6df26ec836045f5a7d3ce2 <d694bf8a9acdbd061596f3e7549bc8cb70750a60

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
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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