USN-8720-1

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Source
https://ubuntu.com/security/notices/USN-8720-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8720-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8720-1
Upstream
Related
Published
2026-09-03T12:55:50Z
Modified
2026-09-03T22:56:56Z
Summary
gnupg2 vulnerability
Details

It was discovered that GnuPG incorrectly validated authentication tag lengths when parsing CMS messages encrypted with AES-GCM. An attacker could possibly use this issue to bypass message integrity checks.

References

Affected packages

Ubuntu:24.04:LTS / gnupg2

Package

Name
gnupg2
Purl
pkg:deb/ubuntu/gnupg2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.4.4-2ubuntu17.6

Affected versions

2.*
2.2.40-1.1ubuntu1
2.4.4-2ubuntu7
2.4.4-2ubuntu15
2.4.4-2ubuntu16
2.4.4-2ubuntu17
2.4.4-2ubuntu17.2
2.4.4-2ubuntu17.3
2.4.4-2ubuntu17.4

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "dirmngr",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gnupg",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gnupg-agent",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gnupg-l10n",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gnupg-utils",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gnupg2",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpg",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpg-agent",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpg-wks-client",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpg-wks-server",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpgconf",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpgsm",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpgv",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpgv-static",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "gpgv-win32",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "keyboxd",
            "binary_version":  "2.4.4-2ubuntu17.6"
        },
        {
            "binary_name":  "scdaemon",
            "binary_version":  "2.4.4-2ubuntu17.6"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-57062",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "low",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8720-1.json"

Ubuntu:26.04:LTS / gnupg2

Package

Name
gnupg2
Purl
pkg:deb/ubuntu/gnupg2?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.4.8-4ubuntu3.1

Affected versions

2.*
2.4.8-2ubuntu2
2.4.8-4ubuntu1
2.4.8-4ubuntu2
2.4.8-4ubuntu3

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "dirmngr",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gnupg",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gnupg-agent",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gnupg-l10n",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gnupg-utils",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gnupg2",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpg",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpg-agent",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpg-wks-client",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpg-wks-server",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpgconf",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpgsm",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpgv",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "gpgv-static",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "scdaemon",
            "binary_version":  "2.4.8-4ubuntu3.1"
        },
        {
            "binary_name":  "tpm2daemon",
            "binary_version":  "2.4.8-4ubuntu3.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-57062",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "low",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8720-1.json"