/usr/share/ is in php-symfony-asset 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/Component/Asset/Context/
/usr/share/doc/
/usr/share/doc/php-symfony-asset/
/usr/share/doc/php-symfony-asset/changelog.Debian.gz
/usr/share/doc/php-symfony-asset/copyright
/usr/share/php/
/usr/share/php/Symfony/
/usr/share/php/Symfony/Component/
/usr/share/php/Symfony/Component/Asset/
/usr/share/php/Symfony/Component/Asset/Context/ContextInterface.php
/usr/share/php/Symfony/Component/Asset/Context/NullContext.php
/usr/share/php/Symfony/Component/Asset/Context/RequestStackContext.php
/usr/share/php/Symfony/Component/Asset/Exception/
/usr/share/php/Symfony/Component/Asset/Exception/ExceptionInterface.php
/usr/share/php/Symfony/Component/Asset/Exception/InvalidArgumentException.php
/usr/share/php/Symfony/Component/Asset/Exception/LogicException.php
/usr/share/php/Symfony/Component/Asset/Package.php
/usr/share/php/Symfony/Component/Asset/PackageInterface.php
/usr/share/php/Symfony/Component/Asset/Packages.php
/usr/share/php/Symfony/Component/Asset/PathPackage.php
/usr/share/php/Symfony/Component/Asset/UrlPackage.php
/usr/share/php/Symfony/Component/Asset/VersionStrategy/
/usr/share/php/Symfony/Component/Asset/VersionStrategy/EmptyVersionStrategy.php
/usr/share/php/Symfony/Component/Asset/VersionStrategy/JsonManifestVersionStrategy.php
/usr/share/php/Symfony/Component/Asset/VersionStrategy/StaticVersionStrategy.php
/usr/share/php/Symfony/Component/Asset/VersionStrategy/VersionStrategyInterface.php
/usr/share/php/Symfony/Component/Asset/autoload.php