CVE-2025-38423

Kernel memory corruption via double-freed regulator supplies

Published Jul 25, 2025 · Updated May 11, 2026

Double free in the Linux kernel wcd9375 codec driver in 6.11 through 6.12.34 and 6.13 through 6.15.3 allows local users to corrupt kernel memory. The driver acquires regulator supplies with devm_regulator_bulk_get(), which schedules managed cleanup, but its probe-error and remove paths also call regulator_bulk_free() on the same supplies. Reachability requires the affected codec driver and execution of one of those cleanup paths; the duplicate release can destabilize the kernel.

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 wcd9375 codec driver in 6.11 through 6.12.34 and 6.13 through 6.15.3 allows local users to corrupt kernel memory. The driver acquires regulator supplies with devm_regulator_bulk_get(), which schedules managed cleanup, but its probe-error and remove paths also call regulator_bulk_free() on the same supplies. Reachability requires the affected codec driver and execution of one of those cleanup paths; the duplicate release can destabilize the kernel.

The record

CVE
CVE-2025-38423
Published
Jul 25, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 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=216d04139a6d0ecaea9432178225b29d367da886 <63fe298652d4eda07d738bfcbbc59d1343a675ef
  2. Affected versionversion=216d04139a6d0ecaea9432178225b29d367da886 <c8228b5f3d74fd8ad4dfc79d5d601eb6fca5e63e
  3. Affected versionversion=216d04139a6d0ecaea9432178225b29d367da886 <ce30258c05d39b62a05c99016d7148b3bf60fbdc
  4. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=216d04139a6d0ecaea9432178225b29d367da886 <63fe298652d4eda07d738bfcbbc59d1343a675ef; version=216d04139a6d0ecaea9432178225b29d367da886 <c8228b5f3d74fd8ad4dfc79d5d601eb6fca5e63e; version=216d04139a6d0ecaea9432178225b29d367da886 <ce30258c05d39b62a05c99016d7148b3bf60fbdc; version=6.11

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

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

CWE-415Double Free

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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