CVE-2025-38486

Kernel panic via SoundWire channel-map overflow

Published Jul 28, 2025 · Updated Aug 5, 2026

Memory corruption in the Linux 6.15 Qualcomm SoundWire driver allows local users to trigger a kernel panic through an ALSA PCM open. qcom_swrm_set_channel_map writes 16 transmit-port entries into the 15-entry ctrl->pconfig array, overwrites adjacent runtime state, and replaces transmit data with receive data. Reachability requires Dragonboard 845c or comparable Qualcomm SoundWire hardware; card binding can panic during probe, while an unprivileged audio-device user can reach the path by opening a SoundWire-backed stream.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
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 the Linux 6.15 Qualcomm SoundWire driver allows local users to trigger a kernel panic through an ALSA PCM open. qcom_swrm_set_channel_map writes 16 transmit-port entries into the 15-entry ctrl->pconfig array, overwrites adjacent runtime state, and replaces transmit data with receive data. Reachability requires Dragonboard 845c or comparable Qualcomm SoundWire hardware; card binding can panic during probe, while an unprivileged audio-device user can reach the path by opening a SoundWire-backed stream.

The record

CVE
CVE-2025-38486
Published
Jul 28, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1529
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.15
  2. Affected versionversion=7796c97df6b1b2206681a07f3c80f6023a6593d5 <207cea8b72fcbdf4e6db178e54186ed4f1514b3c
  3. Affected versionversion=7796c97df6b1b2206681a07f3c80f6023a6593d5 <834bce6a715ae9a9c4dce7892454a19adf22b013

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.15; version=7796c97df6b1b2206681a07f3c80f6023a6593d5 <207cea8b72fcbdf4e6db178e54186ed4f1514b3c; version=7796c97df6b1b2206681a07f3c80f6023a6593d5 <834bce6a715ae9a9c4dce7892454a19adf22b013

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1529System Shutdown/Reboot

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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