Not yet scoredPublished Oct 29, 2025

CVE-2025-40085ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card

Updated under an hour ago (Oct 26, 2026, 9:40 PM ET)

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Exploited in the last 30 days

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().

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 28787ff9fbeaf57684eb64cc33e2ec8ceedf21b5 before 736159f7b296d7a95f7208eb4799639b1f8b16a0; 39efc9c8a973ddff5918191525d1679d0fb368ea builds before 8d19a7ab28c7b9c207db5c5282afa8cc8595bcdb; from 39efc9c8a973ddff5918191525d1679d0fb368ea before 576312eb436326b44b7010f4d9ae2b698df075ea; from 39efc9c8a973ddff5918191525d1679d0fb368ea before bba7208765d26e5e36b87f21dacc2780b064f41f; from 39efc9c8a973ddff5918191525d1679d0fb368ea before 8503ac1a62075a085402e42a386b5c627c821a51; from 39efc9c8a973ddff5918191525d1679d0fb368ea before 28412b489b088fb88dff488305fd4e56bd47f6e4; 9d4f4dc3cd38e412c29a7626489fe48b79ebbf6c; 52076a41c128146c9df4a157e972cb17019313b1; and 3 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/736159f7b296d7a95f7208eb4799639b1f8b16a0
https://git.kernel.org/stable/c/8d19a7ab28c7b9c207db5c5282afa8cc8595bcdb
https://git.kernel.org/stable/c/576312eb436326b44b7010f4d9ae2b698df075ea
https://git.kernel.org/stable/c/bba7208765d26e5e36b87f21dacc2780b064f41f
https://git.kernel.org/stable/c/8503ac1a62075a085402e42a386b5c627c821a51
https://git.kernel.org/stable/c/28412b489b088fb88dff488305fd4e56bd47f6e4

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.