USN-6719-1 fixed a vulnerability in util-linux. Unfortunately, it was discovered that the fix did not fully address the issue. This update removes the setgid permission bit from the wall and write utilities.
Original advisory details:
Skyler Ferrante discovered that the util-linux wall command did not filter escape sequences from command line arguments. A local attacker could possibly use this issue to obtain sensitive information.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bsdutils",
            "binary_version": "1:2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "fdisk",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libblkid-dev",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libblkid1",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libfdisk-dev",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libfdisk1",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libmount-dev",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libmount1",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libsmartcols-dev",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libsmartcols1",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "libuuid1",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "mount",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "rfkill",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "util-linux",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "util-linux-locales",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "uuid-dev",
            "binary_version": "2.34-0.1ubuntu9.6"
        },
        {
            "binary_name": "uuid-runtime",
            "binary_version": "2.34-0.1ubuntu9.6"
        }
    ]
}
          {
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bsdextrautils",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "bsdutils",
            "binary_version": "1:2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "eject",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "fdisk",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libblkid-dev",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libblkid1",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libfdisk-dev",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libfdisk1",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libmount-dev",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libmount1",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libsmartcols-dev",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libsmartcols1",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "libuuid1",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "mount",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "rfkill",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "util-linux",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "util-linux-locales",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "uuid-dev",
            "binary_version": "2.37.2-4ubuntu3.4"
        },
        {
            "binary_name": "uuid-runtime",
            "binary_version": "2.37.2-4ubuntu3.4"
        }
    ]
}