Virtual Network Computing is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients. Security Fix: * tigervnc: Stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder * tigervnc: Heap buffer overflow triggered from CopyRectDecoder due to incorrect value checks * tigervnc: Heap buffer overflow in TightDecoder::FilterGradient * tigervnc: Heap buffer overflow in DecodeManager::decodeRect * tigervnc: Stack buffer overflow in CMsgReader::readSetCursor For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.9 Release Notes linked from the References section.