Roman Fiedler reported that missing length validation in various functions provided by libx11, the X11 client-side library, allow to inject X11 protocol commands on X clients, leading to authentication bypass, denial of service or potentially the execution of arbitrary code. For the stable distribution (buster), this problem has been fixed in version 2:1.6.7-1+deb10u2. We recommend that you upgrade your libx11 packages. For the detailed security status of libx11 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libx11
Roman Fiedler reported that missing length validation in various functions provided by libx11, the X11 client-side library, allow to inject X11 protocol commands on X clients, leading to authentication bypass, denial of service or potentially the execution of arbitrary code.
For the stable distribution (buster), this problem has been fixed in version 2:1.6.7-1+deb10u2.
We recommend that you upgrade your libx11 packages.
For the detailed security status of libx11 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libx11
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