OpenZFS through 2.1.13 and 2.2.x through 2.2.1, in certain scenarios involving applications that try to rely on efficient copying of file data, can replace file contents with zero-valued bytes and thus potentially disable security mechanisms. NOTE: this issue is not always security related, but can be security related in realistic situations. A possible example is cp, from a recent GNU Core Utilities (coreutils) version, when attempting to preserve a rule set for denying unauthorized access. (One might use cp when configuring access control, such as with the /etc/hosts.deny file specified in the IBM Support reference.) NOTE: this issue occurs less often in version 2.2.1, and in versions before 2.1.4, because of the default configuration in those versions.
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_name": "libnvpair3linux", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libnvpair3linux-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libpam-zfs", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libpam-zfs-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libuutil3linux", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libuutil3linux-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzfs4linux", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzfs4linux-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzfsbootenv1linux", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzfsbootenv1linux-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzfslinux-dev", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzpool5linux", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "libzpool5linux-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "python3-pyzfs", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "pyzfs-doc", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-dkms", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-dracut", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-initramfs", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-test", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-test-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-zed", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfs-zed-dbgsym", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfsutils-linux", "binary_version": "2.2.2-0ubuntu2" }, { "binary_name": "zfsutils-linux-dbgsym", "binary_version": "2.2.2-0ubuntu2" } ] }