CVE-2026-45963

Kernel crash via uncanceled jack-detection work

Published May 27, 2026 · Updated May 27, 2026

NULL pointer dereference in the Linux Kernel nau8821 ASoC codec driver allows local users to crash the kernel during driver unload. Component removal does not synchronously cancel delayed jdet_work, so the worker later enters DAPM and mutex code through removed driver state. Exploitation requires local access, the snd_soc_nau8821 driver, and pending jack-detection work during unload; the reported consequence is a kernel crash.

CVSS severity5.5
Medium
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

NULL pointer dereference in the Linux Kernel nau8821 ASoC codec driver allows local users to crash the kernel during driver unload. Component removal does not synchronously cancel delayed jdet_work, so the worker later enters DAPM and mutex code through removed driver state. Exploitation requires local access, the snd_soc_nau8821 driver, and pending jack-detection work during unload; the reported consequence is a kernel crash.

The record

CVE
CVE-2026-45963
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=5.16
  2. Affected versionversion=aab1ad11d69fa7f35cb88105614ea7911598e1d6 <3955767ec39dcc0358470ffe6535703e2b7fd815
  3. Affected versionversion=aab1ad11d69fa7f35cb88105614ea7911598e1d6 <dbd3fd05cddfdeec1e49b0a66269881c09eebd17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.16; version=aab1ad11d69fa7f35cb88105614ea7911598e1d6 <3955767ec39dcc0358470ffe6535703e2b7fd815; version=aab1ad11d69fa7f35cb88105614ea7911598e1d6 <dbd3fd05cddfdeec1e49b0a66269881c09eebd17

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS: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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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