CVE-2023-54096

Local kernel compromise via completion queue reinitialization

Published Dec 24, 2025 · Updated Dec 24, 2025

Memory corruption in the Linux kernel SoundWire subsystem allows local users to compromise the kernel through repeated audio power cycles. In drivers/soundwire/bus.c, signaling wakes only one waiter and init_completion() reinitializes a live completion queue while waiters remain. Ordinary sound-device access is sufficient; missed wakeups can disable audio, while queue corruption can cause kernel disclosure, writes, oopses, or hangs.

CVSS severity7.8
High
EPSS probability0.16%
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 kernel SoundWire subsystem allows local users to compromise the kernel through repeated audio power cycles. In drivers/soundwire/bus.c, signaling wakes only one waiter and init_completion() reinitializes a live completion queue while waiters remain. Ordinary sound-device access is sufficient; missed wakeups can disable audio, while queue corruption can cause kernel disclosure, writes, oopses, or hangs.

The record

CVE
CVE-2023-54096
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.7
  2. Affected versionversion=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <48d1d0ce0782f995fda678508fdae35c5e9593f0
  3. Affected versionversion=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <a36b522767f3a72688893a472e80c9aa03e67eda
  4. Affected versionversion=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <c40d6b3249b11d60e09d81530588f56233d9aa44
  5. Affected versionversion=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <c5265691cd065464d795de5666dcfb89c26b9bc1
  6. Affected versionversion=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <e1d54962a63b6ec04ed0204a3ecca942fde3a6fe

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <48d1d0ce0782f995fda678508fdae35c5e9593f0; version=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <a36b522767f3a72688893a472e80c9aa03e67eda; version=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <c40d6b3249b11d60e09d81530588f56233d9aa44; version=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <c5265691cd065464d795de5666dcfb89c26b9bc1; version=fb9469e54fa7a7b6a8137c40ae66c41b8d0ab175 <e1d54962a63b6ec04ed0204a3ecca942fde3a6fe

Published CVSS scores

7.8LinuxCVSS: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 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

T1068Exploitation for Privilege Escalation

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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