CVE-2025-38249

Summary

In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()

In snd_usb_get_audioformat_uac3(), the length value returned from snd_usb_ctl_msg() is used directly for memory allocation without validation. This length is controlled by the USB device.

The allocated buffer is cast to a uac3_cluster_header_descriptor and its fields are accessed without verifying that the buffer is large enough. If the device returns a smaller than expected length, this leads to an out-of-bounds read.

Add a length check to ensure the buffer is large enough for uac3_cluster_header_descriptor.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < 24ff7d465c4284529bbfa207757bffb6f44b6403affected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < 2dc1c3edf67abd30c757f8054a5da61927cdda21affected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < c3fb926abe90d86f5e3055e0035f04d9892a118baffected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < 6eb211788e1370af52a245d4d7da35c374c7b401affected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < 74fcb3852a2f579151ce80b9ed96cd916ba0d5d8affected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < 0ee87c2814deb5e42921281116ac3abcb326880baffected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < 11e740dc1a2c8590eb7074b5c4ab921bb6224c36affected
LinuxLinux9a2fe9b801f585baccf8352d82839dcd54b300cf < fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8aaffected
LinuxLinux4.17affected
LinuxLinux0 < 4.17unaffected
LinuxLinux5.4.296 <= 5.4.*unaffected
LinuxLinux5.10.240 <= 5.10.*unaffected
LinuxLinux5.15.187 <= 5.15.*unaffected
LinuxLinux6.1.143 <= 6.1.*unaffected
LinuxLinux6.6.96 <= 6.6.*unaffected
LinuxLinux6.12.36 <= 6.12.*unaffected
LinuxLinux6.15.5 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References