USN-5627-1 fixed several vulnerabilities in PCRE. This update provides the corresponding fixes for Ubuntu 18.04 ESM.
Original advisory details:
It was discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker could possibly use this issue to cause applications using PCRE to expose sensitive information.
{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libpcre2-16-0",
            "binary_version": "10.31-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libpcre2-32-0",
            "binary_version": "10.31-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libpcre2-8-0",
            "binary_version": "10.31-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libpcre2-dev",
            "binary_version": "10.31-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libpcre2-posix0",
            "binary_version": "10.31-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "pcre2-utils",
            "binary_version": "10.31-2ubuntu0.1~esm1"
        }
    ]
}
          {
    "cves": [
        {
            "id": "CVE-2022-1586",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2022-1587",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}