This update for squid fixes the following issues: squid was updated to version 4.12 Security issue fixed: - CVE-2020-14059: Fixed an issue where a client could potentially deny the service of a server during TLS Handshake . Other issues addressed: - Reverted to slow search for new SMP shm pages due to a regression - Fixed an issue where negative responses were never cached - Fixed stall if transaction was overwriting a recently active cache entry