CVE-2025-38341: In the Linux kernel, the following vulnerability has been resolved: eth: fbnic: avoid double free when failing to DMA-m

CVE-2025-38341 is a double free vulnerability (a bug where memory is freed twice, causing crashes or security issues) in the Linux kernel's fbnic ethernet driver that occurs when a function called fbnic_mbx_map_msg() fails to DMA-map (transfer data to hardware memory) a firmware message. The vulnerability arises because the function's design expects callers to free the message themselves on error, but some code paths may incorrectly free the message twice.