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The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving image type and geometry, which triggers out-of-bounds read operations. References https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7942 Upstream patch https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8ea762f94f4c942d898fdeb590a1630c83235c17 (From OE-Core rev: 6d4421301a54c26e390fa943805574ced6e18c3a) Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>