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.
{
"binaries": [
{
"binary_name": "fontconfig",
"binary_version": "2.11.0-0ubuntu4.2"
},
{
"binary_name": "fontconfig-config",
"binary_version": "2.11.0-0ubuntu4.2"
},
{
"binary_name": "libfontconfig1",
"binary_version": "2.11.0-0ubuntu4.2"
},
{
"binary_name": "libfontconfig1-dev",
"binary_version": "2.11.0-0ubuntu4.2"
}
],
"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": "libfontconfig1",
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},
{
"binary_name": "libfontconfig1-dev",
"binary_version": "2.11.94-0ubuntu1.1"
}
],
"availability": "No subscription required"
}