CVE-2026-74505

System crash via pending URB use-after-free

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in the ALSA 6fire driver in Linux allows local users to crash the system by causing a USB device probe error. The usb6fire_chip_probe error path frees the sound card without first marking shutdown, disconnecting the card, and aborting the pending URB. Local access sufficient to provoke the driver's USB probe failure is required, and the grounded consequence is a system crash.

CVSS severity5.5
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

Use-after-free in the ALSA 6fire driver in Linux allows local users to crash the system by causing a USB device probe error. The usb6fire_chip_probe error path frees the sound card without first marking shutdown, disconnecting the card, and aborting the pending URB. Local access sufficient to provoke the driver's USB probe failure is required, and the grounded consequence is a system crash.

The record

CVE
CVE-2026-74505
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=0 <6.12.103
  2. Affected versionversion=0 <6.18.44
  3. Affected versionversion=0 <6.6.151
  4. Affected versionversion=0 <7.1.8
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <11e2953d9f4c7c3d2af94a889c2d805c537d633f
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2de734dcbb210bd59983e13d36988acbcc122194
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <49bc7741cd2761c703a292dc69245041ae8a67bd
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <630c8d6a93cbd9b2a207f1a67ef1fd21af098b0c
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a54bf16965f896415c3337bc4fbb40fb11941d99

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.103; version=0 <6.18.44; version=0 <6.6.151; version=0 <7.1.8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <11e2953d9f4c7c3d2af94a889c2d805c537d633f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2de734dcbb210bd59983e13d36988acbcc122194; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <49bc7741cd2761c703a292dc69245041ae8a67bd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <630c8d6a93cbd9b2a207f1a67ef1fd21af098b0c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a54bf16965f896415c3337bc4fbb40fb11941d99

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.6Amazon LinuxCVSS:3.1/AV:P/AC:L/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

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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

CWE-825Expired Pointer Dereference

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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