USN-7526-1

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Source
https://ubuntu.com/security/notices/USN-7526-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7526-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7526-1
Upstream
Related
Published
2025-05-21T13:47:23.101403Z
Modified
2025-07-16T08:36:25.420741Z
Summary
bind9 vulnerability
Details

It was discovered that Bind incorrectly handled certain DNS messages with invalid TSIG. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service.

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-dbgsym",
            "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-dnsutils-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-doc",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-host-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-libs-dbgsym",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.4-3ubuntu1.1"
        },
        {
            "binary_name": "bind9-utils-dbgsym",
            "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"
        }
    ]
}