CVE-2026-31587

Kernel invalid read via premature DAI release

Published Apr 24, 2026 · Updated Apr 24, 2026

Use-after-free in the Linux kernel q6apm ASoC driver allows local users to trigger an invalid memory read during audio-device removal. The component and its dynamically registered DAIs use device-managed allocation, so teardown frees a DAI before snd_soc_del_component_unlocked finishes using its pointer. Reachability requires local low-privileged access, the Qualcomm q6apm audio path, and a device-unbind sequence; the demonstrated result is a KASAN-detected kernel memory-safety failure.

CVSS severity7.8
High
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

Use-after-free in the Linux kernel q6apm ASoC driver allows local users to trigger an invalid memory read during audio-device removal. The component and its dynamically registered DAIs use device-managed allocation, so teardown frees a DAI before snd_soc_del_component_unlocked finishes using its pointer. Reachability requires local low-privileged access, the Qualcomm q6apm audio path, and a device-unbind sequence; the demonstrated result is a KASAN-detected kernel memory-safety failure.

The record

CVE
CVE-2026-31587
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <30383b7780ffa140bc124de5b66cae7c84133dbb
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a561a55b79a9c55f0443377f2d4dcf6149d057af
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b7412ed789ffb1e59c8d6f5ab6a6a718963c85e2
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f7b790531cdad3b2075ab937aa06d7b802403be4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <30383b7780ffa140bc124de5b66cae7c84133dbb; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a561a55b79a9c55f0443377f2d4dcf6149d057af; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b7412ed789ffb1e59c8d6f5ab6a6a718963c85e2; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f7b790531cdad3b2075ab937aa06d7b802403be4

Published CVSS scores

7.8Linux kernel CNACVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After 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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