In the Linux kernel, the following vulnerability has been resolved: ch_ktls: Fix kernel panic Taking page refcount is not ideal and causes kernel panic sometimes. It's better to take tx_ctx lock for the complete skb transmit, to avoid page cleanup if ACK received in middle. CREATE(Triage):(User=admin) CVE-2021-46911 (https://nvd.nist.gov/vuln/detail/CVE-2021-46911)