CVE-2023-53847

An uninitialized value vulnerability was found in the alauda USB storage driver in the Linux kernel. In alauda_check_media(), the function does not verify that USB transfer operations succeeded before using the received data. If a transfer fails, uninitialized memory may be accessed, leading to undefined behavior. Additionally, alauda_check_media() performs DMA to a stack buffer, which is incorrect behavior.

This is an uninitialized memory access vulnerability in the alauda USB storage driver. The impact is limited to systems with Alauda-compatible media devices connected via USB.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the ums-alauda module from being loaded. See https://access.redhat.com/solutions/41278 for instructions on how to blacklist a kernel module.