CVE-2022-48716

Kernel memory corruption via misused mixer channel ID

Published Jun 20, 2024 · Updated Aug 5, 2026

Memory corruption in Linux kernel 5.14 allows attackers to corrupt kernel memory through an out-of-range WCD938x port-map access. The WCD938x mixer-control handlers use the channel ID stored in mixer->reg as a SoundWire port ID instead of deriving the port from chan_info. Reachability requires the WCD938x codec path and an affected mixer control; the published record identifies structure corruption but does not specify attacker privileges or further consequences.

CVSS severity9.8
Critical
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Linux kernel 5.14 allows attackers to corrupt kernel memory through an out-of-range WCD938x port-map access. The WCD938x mixer-control handlers use the channel ID stored in mixer->reg as a SoundWire port ID instead of deriving the port from chan_info. Reachability requires the WCD938x codec path and an affected mixer control; the published record identifies structure corruption but does not specify attacker privileges or further consequences.

The record

CVE
CVE-2022-48716
Published
Jun 20, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-400
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

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  1. Affected versionversion=5.14
  2. Affected versionversion=e8ba1e05bdc016700c85fad559a812c2e795442f <9167f2712dc8c24964840a4d1e2ebf130e846b95
  3. Affected versionversion=e8ba1e05bdc016700c85fad559a812c2e795442f <aa7152f9f117b3e66b3c0d4158ca4c6d46ab229f
  4. Affected versionversion=e8ba1e05bdc016700c85fad559a812c2e795442f <c5c1546a654f613e291a7c5d6f3660fc1eb6d0c7

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=e8ba1e05bdc016700c85fad559a812c2e795442f <9167f2712dc8c24964840a4d1e2ebf130e846b95; version=e8ba1e05bdc016700c85fad559a812c2e795442f <aa7152f9f117b3e66b3c0d4158ca4c6d46ab229f; version=e8ba1e05bdc016700c85fad559a812c2e795442f <c5c1546a654f613e291a7c5d6f3660fc1eb6d0c7
The Linux Kernel Organization · Linux Kernelversion=5.14; version=e8ba1e05bdc0 <9167f2712dc8; version=e8ba1e05bdc0 <aa7152f9f117; version=e8ba1e05bdc0 <c5c1546a654f

Published CVSS scores

9.8CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption

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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