Security readout for executives and security teams
Plain-English summary
A race during removal of the Linux NAU8821 audio driver can leave jack-detection work running after its component is gone. When that work later executes, it may access invalid state and crash the kernel. The documented impact is system availability; the supplied evidence does not establish remote access, data theft, privilege escalation, or active exploitation.
Executive priority
Prioritize affected appliances, workstations, or handheld systems where audio drivers are dynamically removed, reloaded, or exercised during suspend and device-management workflows. Treat remediation as an availability hardening update. Escalate urgency if crashes are observed, but the bundle does not support calling this critical or actively exploited.
Technical view
The snd_soc_nau8821 component can be removed while delayed jdet_work remains pending. Its later execution may call into released component state, producing a kernel page fault. The upstream resolution cancels pending jack-detection work, or waits for running work to finish, before removal. Multiple Linux stable commits are referenced, but the supplied version list lacks clear range semantics.
Likely exposure
Exposure is limited to Linux systems using the NAU8821 ASoC codec driver where the component can be removed or its driver unloaded while jack-detection work is pending. The bundle demonstrates the fault on Valve Jupiter hardware, but does not establish that exposure is exclusive to that device. Internet-facing exposure is not indicated.
Exploitation context
The supplied sources describe a reproducible kernel crash condition but provide no CVSS score, CWE classification, KEV listing, or evidence of exploitation in the wild. Triggering appears to require a specific driver lifecycle and timing condition. Whether an unprivileged local user can reliably cause it is not established by the bundle.
Researcher notes
This appears to be delayed-work lifecycle cleanup failure in the ASoC NAU8821 component removal path. The expected safety property is that jdet_work is neither pending nor executing after component teardown. Exact affected and fixed version ranges cannot be reconstructed confidently from the flattened version array; validate ancestry or vendor backports against the six referenced stable commits.
Mitigation direction
- Install a vendor-supported kernel containing the applicable referenced stable fix.
- Confirm the selected kernel package includes the NAU8821 delayed-work cancellation change.
- Until updated, avoid unloading or removing the NAU8821 component during jack-detection activity.
- Follow Linux distribution or device-vendor guidance for backports and release applicability.
Validation and detection
- Inventory systems for the snd_soc_nau8821 driver and NAU8821 audio hardware.
- Record running kernel versions and compare them with vendor advisories or fixed package changelogs.
- Verify source or vendor backport records include the applicable referenced stable commit.
- Review kernel logs for nau8821_jdet_work page faults or crashes during driver removal.
- Test driver removal only in a controlled, non-production environment after applying the fix.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2026-45963 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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Vulnerability timeline
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- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
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Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/cd6b991de3e0b68560fe98dc739672747d2e4204CVE reference, Linux
- https://git.kernel.org/stable/c/36fb28fa033f6544d81f1cc056b27d0c0bf26d4fCVE reference, Linux
- https://git.kernel.org/stable/c/9210ae708ddead67f55610342ea03fe9d4de6005CVE reference, Linux
- https://git.kernel.org/stable/c/13d20517bee1c9b69c7750026c61e7ec021080a4CVE reference, Linux
- https://git.kernel.org/stable/c/3955767ec39dcc0358470ffe6535703e2b7fd815CVE reference, Linux
- https://git.kernel.org/stable/c/dbd3fd05cddfdeec1e49b0a66269881c09eebd17CVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.