This update for the Linux Kernel 4.4.121-92_104 fixes several issues. The following security issues were fixed: - CVE-2019-11477: Jonathan Looney discovered that the TCP_SKB_CB-gt;tcp_gso_segs value was subject to an integer overflow when handling TCP Selective Acknowledgments . A remote attacker could use this to cause a denial of service. - CVE-2019-11478: Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment could be fragmented when handling certain TCP Selective Acknowledgment sequences. A remote attacker could use this to cause a denial of service. - CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network . This update contains a regression fix for CVE-2019-11477 and CVE-2019-11478 .