CVE-2025-37941

Service interruption via unreleased codec probe allocation

Published May 20, 2025 · Updated May 11, 2026

Memory leak in the WCD937x ASoC codec driver in Linux allows local users to interrupt service via codec probe error paths. The wcd937x_soc_codec_probe() error path returns after control or route registration fails without freeing clsh_info allocated by wcd_clsh_ctrl_alloc(). Exploitation requires low-privilege local access and a failing registration operation; no data disclosure or modification is reported.

CVSS severity5.5
Medium
EPSS probability0.19%
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 WCD937x ASoC codec driver in Linux allows local users to interrupt service via codec probe error paths. The wcd937x_soc_codec_probe() error path returns after control or route registration fails without freeing clsh_info allocated by wcd_clsh_ctrl_alloc(). Exploitation requires low-privilege local access and a failing registration operation; no data disclosure or modification is reported.

The record

CVE
CVE-2025-37941
Published
May 20, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 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=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <3e330acf4efd63876d673c046cd073a1d4ed57a8
  2. Affected versionversion=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <aafb5325aca3e806b3ea3707402189263473d257
  3. Affected versionversion=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <acadb2e2b3c5b9977a843a3a94fece9bdcf6aea1
  4. Affected versionversion=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <b573e04116fd33b9143fa276bbab2f0afad0a1ae
  5. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <3e330acf4efd63876d673c046cd073a1d4ed57a8; version=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <aafb5325aca3e806b3ea3707402189263473d257; version=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <acadb2e2b3c5b9977a843a3a94fece9bdcf6aea1; version=313e978df7fc38b9e949ac5933d0d9d56d5e8a9c <b573e04116fd33b9143fa276bbab2f0afad0a1ae; version=6.11

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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
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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