CVE-2025-39873 can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB

In the Linux kernel, the following vulnerability has been resolved: can: xilinxcan: xcanwriteframe: fix use-after-free of transmitted SKB canputechoskb takes ownership of the SKB and it may be freed during or after the call. However, xilinxcan xcanwriteframe keeps using SKB after the call. Fix th...

CVE-2025-39873

CVE-2025-39873 (Linux kernel) : The vulnerability concerns the xilinx_can driver where xcan_write_frame() may use a previously freed skb. The root cause is that can_put_echo_skb() can take ownership of the SKB, which may be freed during or after the call, while xcan_write_frame() continues to tou...