UBUNTU-CVE-2025-40775

When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.

References

Affected packages

Ubuntu:25.04 / bind9

Package

Name: bind9
Purl: pkg:deb/ubuntu/bind9@1:9.20.4-3ubuntu1.1?arch=source&distro=plucky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:9.20.4-3ubuntu1.1

Affected versions

1:9.*

1:9.20.0-2ubuntu3

1:9.20.0-2ubuntu4

1:9.20.4-3ubuntu1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-dev",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        }
    ]
}