CVE-2025-40085 - CVE House
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Status published Unknown CVE-2025-40085

ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card In try_to_register_card(), the return value of usb_ifnum_to_if() is passed directly to usb_interface_claimed() without a NULL check, which will lead to a NULL pointer dereference when creating an invalid USB audio device. Fix this by adding a check to ensure the interface pointer is valid before passing it to usb_interface_claimed().

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
28787ff9fbeaf57684eb64cc33e2ec8ceedf21b5, 39efc9c8a973ddff5918191525d1679d0fb368ea, 9d4f4dc3cd38e412c29a7626489fe48b79ebbf6c, 52076a41c128146c9df4a157e972cb17019313b1, 5.15.75, 5.19.17, 6.0.3, 6.1, 0, 5.15.196, 6.1.158, 6.6.114, 6.12.55, 6.17.5, 6.18

Timeline

Official Publish: October 29th, 2025
Last Modified: May 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.