CVE-2026-64478

System crash via stale kobject name dereference

Published Jul 25, 2026 · Updated Jul 25, 2026

Denial of service in Linux Kernel ALSA USB audio in affected releases allows physically proximate attackers to crash systems via DualSense hotplug. During repeated disconnect and reconnect events, snd_dualsense_ih_match() calls kobject_get_path() while the USB device is disconnecting, causing name traversal to dereference an invalid kobject name in strlen(). Physical access to a connected DualSense controller and precise hotplug timing are required; successful triggering crashes the kernel without reported data disclosure or modification.

CVSS severity4.2
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux Kernel ALSA USB audio in affected releases allows physically proximate attackers to crash systems via DualSense hotplug. During repeated disconnect and reconnect events, snd_dualsense_ih_match() calls kobject_get_path() while the USB device is disconnecting, causing name traversal to dereference an invalid kobject name in strlen(). Physical access to a connected DualSense controller and precise hotplug timing are required; successful triggering crashes the kernel without reported data disclosure or modification.

The record

CVE
CVE-2026-64478
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 2026Record 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=0105cfc41abeb428d4405951a20e1e239bea5e1d
  2. Affected versionversion=104ad9bae11ee450fb7d0595ff7876cfb6527838
  3. Affected versionversion=5.10.245 <5.10.261
  4. Affected versionversion=5.15.194 <5.15.212
  5. Affected versionversion=5.4.300 <5.5
  6. Affected versionversion=6.1.155 <6.1.178
  7. Affected versionversion=6.12.50 <6.12.96
  8. Affected versionversion=6.16.10 <6.17
  9. Affected versionversion=6.17
  10. Affected versionversion=6.6.109 <6.6.145
  11. Affected versionversion=79d561c4ec0497669f19a9550cfb74812f60938b <4246dd043b7a4f8e3bc1d2896e81d11220610eda
  12. Affected versionversion=79d561c4ec0497669f19a9550cfb74812f60938b <7693c0cc415f3a16a7a3355f245474a5e661be4e
  13. Affected versionversion=79d561c4ec0497669f19a9550cfb74812f60938b <a263eb12cbe2e208e6e637df0f9b0be9a484158e
  14. Affected versionversion=a705899ec6085b12a33aa0fd94a58e82e9e90502 <c1da6d3f45036fa63672ee04ad97cb526b40b987
  15. Affected versionversion=b4b94f092f193d7a2db8e82af5e51519ae89963c <4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e
  16. Affected versionversion=c2d5b0a6c688ffb32c35627e337fbbcc65bc275f <662a1d7b5affc424ea4f4bc20dd99be29e687886
  17. Affected versionversion=d04d301614630724feb4048bf17432fc7964fe74 <a47ecd904c51ae6a42957feb3cf2f4266adee2e5
  18. Affected versionversion=d0b0264009596c07a77d82808b0dae72bc04ac5c <e4c66a149c408e44e60bfec3fabf08b6b7abbc60

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0105cfc41abeb428d4405951a20e1e239bea5e1d; version=104ad9bae11ee450fb7d0595ff7876cfb6527838; version=5.10.245 <5.10.261; version=5.15.194 <5.15.212; version=5.4.300 <5.5; version=6.1.155 <6.1.178; version=6.12.50 <6.12.96; version=6.16.10 <6.17; version=6.17; version=6.6.109 <6.6.145; version=79d561c4ec0497669f19a9550cfb74812f60938b <4246dd043b7a4f8e3bc1d2896e81d11220610eda; version=79d561c4ec0497669f19a9550cfb74812f60938b <7693c0cc415f3a16a7a3355f245474a5e661be4e; version=79d561c4ec0497669f19a9550cfb74812f60938b <a263eb12cbe2e208e6e637df0f9b0be9a484158e; version=a705899ec6085b12a33aa0fd94a58e82e9e90502 <c1da6d3f45036fa63672ee04ad97cb526b40b987; version=b4b94f092f193d7a2db8e82af5e51519ae89963c <4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e; version=c2d5b0a6c688ffb32c35627e337fbbcc65bc275f <662a1d7b5affc424ea4f4bc20dd99be29e687886; version=d04d301614630724feb4048bf17432fc7964fe74 <a47ecd904c51ae6a42957feb3cf2f4266adee2e5; version=d0b0264009596c07a77d82808b0dae72bc04ac5c <e4c66a149c408e44e60bfec3fabf08b6b7abbc60

Published CVSS scores

4.2Amazon LinuxCVSS:3.1/AV:P/AC:H/PR:N/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.

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No observations available

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

Weakness, pattern, technique

T1200Hardware Additions

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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