CVE-2026-80815

Kernel crash via shared notification URB

Published Sep 4, 2026 · Updated Sep 4, 2026

NULL-pointer dereference in the ALSA scarlett2 driver in Linux 6.10 allows physically proximate attackers to crash the kernel via USB. scarlett2_init_notify reuses the mixer status URB, mistakes that occupied URB for an installed notification request, and leaves cmd_done with an uninitialized wait queue. Triggering the crash requires a compatible Scarlett USB audio device that exposes a UAC2 status interrupt endpoint; the resulting consequence is a kernel service interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
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 ALSA scarlett2 driver in Linux 6.10 allows physically proximate attackers to crash the kernel via USB. scarlett2_init_notify reuses the mixer status URB, mistakes that occupied URB for an installed notification request, and leaves cmd_done with an uninitialized wait queue. Triggering the crash requires a compatible Scarlett USB audio device that exposes a UAC2 status interrupt endpoint; the resulting consequence is a kernel service interruption.

The record

CVE
CVE-2026-80815
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=1b65088958cadab04d5d34a8615e2466b1b48ecb <013448eb7b0d0b91d6168685dab10e9b41baa825
  2. Affected versionversion=1b65088958cadab04d5d34a8615e2466b1b48ecb <04df0232a6976845cd9c9e83b6c26215759be667
  3. Affected versionversion=1b65088958cadab04d5d34a8615e2466b1b48ecb <4305e4b52acc0ca67dcfdf8f73dd943dab508ae8
  4. Affected versionversion=1b65088958cadab04d5d34a8615e2466b1b48ecb <cd17d6ff7b7d2b1dd9bcc80ae7b4a83773f918c6
  5. Affected versionversion=1b65088958cadab04d5d34a8615e2466b1b48ecb <ecd2f83a4ddc078901e7104144cb6c5e5db3b7cf
  6. Affected versionversion=6.10

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1b65088958cadab04d5d34a8615e2466b1b48ecb <013448eb7b0d0b91d6168685dab10e9b41baa825; version=1b65088958cadab04d5d34a8615e2466b1b48ecb <04df0232a6976845cd9c9e83b6c26215759be667; version=1b65088958cadab04d5d34a8615e2466b1b48ecb <4305e4b52acc0ca67dcfdf8f73dd943dab508ae8; version=1b65088958cadab04d5d34a8615e2466b1b48ecb <cd17d6ff7b7d2b1dd9bcc80ae7b4a83773f918c6; version=1b65088958cadab04d5d34a8615e2466b1b48ecb <ecd2f83a4ddc078901e7104144cb6c5e5db3b7cf; version=6.10

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.

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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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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