SUSE-SU-2019:1948-1

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SUSE-SU-2019:1948-1

Summary: Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP3)

Details: This update for the Linux Kernel 4.4.178-94_91 fixes several issues. The following security issues were fixed: - CVE-2019-11477: Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. (bsc#1137586) - CVE-2019-11478: Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. (bsc#1137586) - 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 (bsc#1136424). This update contains a regression fix for CVE-2019-11477 and CVE-2019-11478 (bsc#1140747).

References: https://www.suse.com/support/update/announcement/2019/suse-su-20191948-1/, https://bugzilla.suse.com/1136446, https://bugzilla.suse.com/1137597, https://bugzilla.suse.com/1140747, https://www.suse.com/security/cve/CVE-2019-11477, https://www.suse.com/security/cve/CVE-2019-11478, https://www.suse.com/security/cve/CVE-2019-3846