CVE-2016-7949: Multiple buffer overflows in the (1) XvQueryAdaptors and (2) XvQueryEncodings functions in X.org libXrender...

Security readout for executives and security teams

CVE-2016-7949 is a memory-safety flaw in X.Org client library handling of XVideo server responses. A malicious or compromised remote X server could send crafted length fields and cause an out-of-bounds write in a connecting client. Business exposure is mainly systems that use X11, remote displays, or X forwarding. Exposure is most likely on Unix/Linux desktop or server systems with X.Org client libraries installed, especially where users connect applications to remote X servers or use X11 forwarding. The bundle does not provide precise package CPEs or complete affected product metadata. Treat as a targeted workstation and remote-display risk, not a broad perimeter emergency based on available evidence. Prioritize patching where X11 workflows cross trust boundaries, especially administrator workstations, jump hosts, engineering desktops, and legacy Linux environments. Mitigation focus: Update affected X.Org client library packages using vendor advisories.; Prioritize systems using X11 forwarding or remote display workflows.; Check Gentoo, Fedora, and upstream X.Org guidance for fixed package versions..

Prepared

Jun 13, 2026, 13:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.