A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
Image SLES15-SP2-Manager-4-1-Proxy-BYOS-Azure Image SLES15-SP2-Manager-4-1-Proxy-BYOS-EC2-HVM Image SLES15-SP2-Manager-4-1-Proxy-BYOS-GCE Image SLES15-SP2-Manager-4-1-Server-BYOS-Azure Image SLES15-SP2-Manager-4-1-Server-BYOS-EC2-HVM Image SLES15-SP2-Manager-4-1-Server-BYOS-GCE Image SLES15-SP3-Manager-4-2-Proxy-BYOS-Azure Image SLES15-SP3-Manager-4-2-Proxy-BYOS-EC2-HVM Image SLES15-SP3-Manager-4-2-Proxy-BYOS-GCE Image SLES15-SP3-Manager-4-2-Server-BYOS-Azure Image SLES15-SP3-Manager-4-2-Server-BYOS-EC2-HVM Image SLES15-SP3-Manager-4-2-Server-BYOS-GCE openSUSE Leap 15.3 openSUSE Leap 15.4 openSUSE Tumbleweed SUSE CaaS Platform 4.0 SUSE Enterprise Storage 7 SUSE Linux Enterprise Desktop 12 SP5 SUSE Linux Enterprise Desktop 15 SP3 SUSE Linux Enterprise Desktop 15 SP4 SUSE Linux Enterprise Desktop 15 SP5 SUSE Linux Enterprise High Availability 12 SP4 SUSE Linux Enterprise High Availability 12 SP5 SUSE Linux Enterprise High Availability 15 SP1 SUSE Linux Enterprise High Availability 15 SP2 SUSE Linux Enterprise High Availability 15 SP3 SUSE Linux Enterprise High Performance Computing 12 SP4 SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise High Performance Computing 15 SP1 SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS SUSE Linux Enterprise High Performance Computing 15 SP2 SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise Live Patching 12 SP4 SUSE Linux Enterprise Live Patching 12 SP5 SUSE Linux Enterprise Micro 5.0 SUSE Linux Enterprise Micro 5.1 SUSE Linux Enterprise Micro 5.2 SUSE Linux Enterprise Module for Basesystem 15 SP3 SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Linux Enterprise Module for Basesystem 15 SP5 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Module for Development Tools 15 SP5 SUSE Linux Enterprise Module for Legacy 15 SP3 SUSE Linux Enterprise Module for Legacy 15 SP4 SUSE Linux Enterprise Module for Legacy 15 SP5 SUSE Linux Enterprise Module for Live Patching 15 SP1 SUSE Linux Enterprise Module for Live Patching 15 SP2 SUSE Linux Enterprise Module for Live Patching 15 SP3 SUSE Linux Enterprise Module for Public Cloud 15 SP3 SUSE Linux Enterprise Module for Public Cloud 15 SP4 SUSE Linux Enterprise Module for Realtime packages 15 SP2 SUSE Linux Enterprise Module for Realtime packages 15 SP3 SUSE Linux Enterprise Real Time 15 SP2 SUSE Linux Enterprise Real Time 15 SP3 SUSE Linux Enterprise Real Time Extension 12 SP5 SUSE Linux Enterprise Server 11 SP1 SUSE Linux Enterprise Server 11 SP3 SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server 12 SP4-ESPOS SUSE Linux Enterprise Server 12 SP4-LTSS SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server 15 SP1-BCL SUSE Linux Enterprise Server 15 SP1-LTSS SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server 15 SP2-BCL SUSE Linux Enterprise Server 15 SP2-LTSS SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Software Development Kit 12 SP5 SUSE Linux Enterprise Storage 7.1 SUSE Linux Enterprise Workstation Extension 12 SP5 SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Manager Proxy 4.0 SUSE Manager Proxy 4.1 SUSE Manager Proxy 4.2 SUSE Manager Proxy 4.3 SUSE Manager Retail Branch Server 4.0 SUSE Manager Retail Branch Server 4.1 SUSE Manager Retail Branch Server 4.2 SUSE Manager Retail Branch Server 4.3 SUSE Manager Server 4.0 SUSE Manager Server 4.1 SUSE Manager Server 4.2 SUSE Manager Server 4.3 SUSE OpenStack Cloud 8 SUSE OpenStack Cloud 9 SUSE OpenStack Cloud Crowbar 8 SUSE OpenStack Cloud Crowbar 9