USN-7925-1

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Source
https://ubuntu.com/security/notices/USN-7925-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7925-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-7925-1
Upstream
Related
Published
2025-12-11T13:07:40.194405Z
Modified
2025-12-12T11:44:44.967399Z
Summary
c-ares vulnerability
Details

It was discovered that c-ares incorrectly handled terminating certain queries after a maximum number of attempts. An attacker could possibly use this issue to cause c-ares to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:25.10 / c-ares

Package

Name
c-ares
Purl
pkg:deb/ubuntu/c-ares@1.34.5-1ubuntu0.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.34.5-1ubuntu0.1

Affected versions

1.*

1.34.4-2.1
1.34.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.34.5-1ubuntu0.1",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.34.5-1ubuntu0.1",
            "binary_name": "libc-ares2"
        },
        {
            "binary_version": "1.34.5-1ubuntu0.1",
            "binary_name": "libcares2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2025-62408",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.04 / c-ares

Package

Name
c-ares
Purl
pkg:deb/ubuntu/c-ares@1.34.4-2.1ubuntu0.2?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.34.4-2.1ubuntu0.2

Affected versions

1.*

1.33.0-1
1.34.2-1
1.34.3-1
1.34.4-1
1.34.4-2.1
1.34.4-2.1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.34.4-2.1ubuntu0.2",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.34.4-2.1ubuntu0.2",
            "binary_name": "libc-ares2"
        },
        {
            "binary_version": "1.34.4-2.1ubuntu0.2",
            "binary_name": "libcares2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:25.04",
    "cves": [
        {
            "id": "CVE-2025-62408",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}