CVE-2017-10971: In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code i...

Security readout for executives and security teams

CVE-2017-10971 is a flaw in older X.Org X server builds. A person already authenticated to an X session could trigger a stack overflow that may crash the graphical server or run code in the X server context. This is most relevant to Linux/Unix desktops, kiosks, terminal servers, and shared systems still running unpatched X.Org packages. Exposure is likely limited to systems running X.Org X server versions missing the June 2017 upstream fixes or corresponding distribution updates. Internet-facing exposure is not indicated; the attacker must already be authenticated to an X session. Prioritize remediation where X.Org is used on shared workstations, jump hosts, kiosks, or remote desktop services. Lower urgency may be reasonable for single-user, patched, or non-graphical servers, but unsupported graphical systems should be treated as residual risk. Mitigation focus: Apply vendor X.Org X server updates that include the 2017-06-19 fixes.; Review Debian DSA-3905 or your distribution advisory for package-specific guidance.; Restrict X session access to trusted users only..

Prepared

Jun 13, 2026, 04:25 UTC (UTC+00:00)

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