fontconfig before 2.12.1 does not validate offsets, which allows local users to trigger arbitrary free calls and consequently conduct double free attacks and execute arbitrary code via a crafted cache file.
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{ "ubuntu_priority": "medium", "availability": "No subscription required", "binaries": [ { "binary_name": "fontconfig", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "fontconfig-config", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "fontconfig-dbgsym", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "fontconfig-udeb", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "fontconfig-udeb-dbgsym", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "libfontconfig1", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "libfontconfig1-dbg", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "libfontconfig1-dbgsym", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "libfontconfig1-dev", "binary_version": "2.11.94-0ubuntu1.1" }, { "binary_name": "libfontconfig1-dev-dbgsym", "binary_version": "2.11.94-0ubuntu1.1" } ] }