The remote SUSE host is missing one or more security updates.
This update for kvm fixes the following security issues : CVE-2018-12617: qmp_guest_file_read had an integer overflow that could have been exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket causing DoS (bsc#1098735) CVE-2018-11806: Prevent heap-based buffer overflow via incoming fragmented datagrams (bsc#1096223) With this release the mitigations for Spectre v4 are moved the the patches from upstream (CVE-2018-3639, bsc#1092885). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 11-SP4:zypper in -t patch slessp4-kvm-13771=1