CVE-2025-40085

UnknownEPSS 0.19%

Last modified

CVE-2025-40085 is a vulnerability of currently unknown severity. 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().. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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().

Metrics

EPSS Probability
0.19%

8.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 28787ff9fbeaf57684eb64cc33e2ec8ceedf21b5, < 736159f7b296d7a95f7208eb4799639b1f8b16a0; >= 39efc9c8a973ddff5918191525d1679d0fb368ea, < 8d19a7ab28c7b9c207db5c5282afa8cc8595bcdb; >= 39efc9c8a973ddff5918191525d1679d0fb368ea, < 576312eb436326b44b7010f4d9ae2b698df075ea; >= 39efc9c8a973ddff5918191525d1679d0fb368ea, < bba7208765d26e5e36b87f21dacc2780b064f41f; >= 39efc9c8a973ddff5918191525d1679d0fb368ea, < 8503ac1a62075a085402e42a386b5c627c821a51; >= 39efc9c8a973ddff5918191525d1679d0fb368ea, < 28412b489b088fb88dff488305fd4e56bd47f6e4; 9d4f4dc3cd38e412c29a7626489fe48b79ebbf6c; 52076a41c128146c9df4a157e972cb17019313b1; >= 5.15.75, < 5.15.196; >= 5.19.17, < 5.20; >= 6.0.3, < 6.1
LinuxLinux6.1

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-40085?
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().
How severe is CVE-2025-40085?
Severity scoring for CVE-2025-40085 is pending analysis. The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40085?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST