USN-7694-1

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Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-7694-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7694-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7694-1
Upstream
Related
Published
2025-08-14T04:48:16.259143Z
Modified
2025-08-21T08:15:40.564730Z
Summary
libxml2 vulnerabilities
Details

Ahmed Lekssays discovered that libxml2 did not properly perform certain mathematical operations, leading to an integer overflow. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-6021)

Ahmed Lekssays discovered that libxml2 did not properly validate the size of an untrusted input stream. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-6170)

Nikita Sveshnikov discovered that libxml2 did not properly handle certain XPath expressions, leading to a use-after-free vulnerability. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2025-49794)

Nikita Sveshnikov discovered that libxml2 contained a type confusion vulnerability when parsing specially crafted XML documents. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2025-49796)

References

Affected packages

Ubuntu:Pro:14.04:LTS / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.13+esm8?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.1+dfsg1-3ubuntu4.13+esm8

Affected versions

2.*

2.9.1+dfsg1-3ubuntu2
2.9.1+dfsg1-3ubuntu3
2.9.1+dfsg1-3ubuntu4
2.9.1+dfsg1-3ubuntu4.1
2.9.1+dfsg1-3ubuntu4.2
2.9.1+dfsg1-3ubuntu4.3
2.9.1+dfsg1-3ubuntu4.4
2.9.1+dfsg1-3ubuntu4.5
2.9.1+dfsg1-3ubuntu4.6
2.9.1+dfsg1-3ubuntu4.7
2.9.1+dfsg1-3ubuntu4.8
2.9.1+dfsg1-3ubuntu4.9
2.9.1+dfsg1-3ubuntu4.10
2.9.1+dfsg1-3ubuntu4.11
2.9.1+dfsg1-3ubuntu4.12
2.9.1+dfsg1-3ubuntu4.13
2.9.1+dfsg1-3ubuntu4.13+esm1
2.9.1+dfsg1-3ubuntu4.13+esm2
2.9.1+dfsg1-3ubuntu4.13+esm3
2.9.1+dfsg1-3ubuntu4.13+esm4
2.9.1+dfsg1-3ubuntu4.13+esm5
2.9.1+dfsg1-3ubuntu4.13+esm6
2.9.1+dfsg1-3ubuntu4.13+esm7

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-dbg"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-dbgsym"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-dev-dbgsym"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-udeb"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-udeb-dbgsym"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-utils-dbg"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "python-libxml2"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "python-libxml2-dbg"
        },
        {
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "binary_name": "python-libxml2-dbgsym"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.7+esm9?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.3+dfsg1-1ubuntu0.7+esm9

Affected versions

2.*

2.9.2+zdfsg1-4
2.9.2+zdfsg1-4ubuntu1
2.9.2+zdfsg1-4ubuntu2
2.9.2+zdfsg1-4ubuntu3
2.9.3+dfsg1-1
2.9.3+dfsg1-1ubuntu0.1
2.9.3+dfsg1-1ubuntu0.2
2.9.3+dfsg1-1ubuntu0.3
2.9.3+dfsg1-1ubuntu0.4
2.9.3+dfsg1-1ubuntu0.5
2.9.3+dfsg1-1ubuntu0.6
2.9.3+dfsg1-1ubuntu0.7
2.9.3+dfsg1-1ubuntu0.7+esm1
2.9.3+dfsg1-1ubuntu0.7+esm2
2.9.3+dfsg1-1ubuntu0.7+esm3
2.9.3+dfsg1-1ubuntu0.7+esm4
2.9.3+dfsg1-1ubuntu0.7+esm5
2.9.3+dfsg1-1ubuntu0.7+esm6
2.9.3+dfsg1-1ubuntu0.7+esm7
2.9.3+dfsg1-1ubuntu0.7+esm8

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-dbg"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-dbgsym"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-dev-dbgsym"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-udeb"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-udeb-dbgsym"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-utils-dbg"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "python-libxml2"
        },
        {
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "binary_name": "python-libxml2-dbg"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.9.4+dfsg1-6.1ubuntu1.9+esm4?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.4+dfsg1-6.1ubuntu1.9+esm4

Affected versions

2.*

2.9.4+dfsg1-4ubuntu1
2.9.4+dfsg1-5ubuntu1
2.9.4+dfsg1-5ubuntu2
2.9.4+dfsg1-5.1ubuntu1
2.9.4+dfsg1-5.2ubuntu1
2.9.4+dfsg1-6.1ubuntu1
2.9.4+dfsg1-6.1ubuntu1.2
2.9.4+dfsg1-6.1ubuntu1.3
2.9.4+dfsg1-6.1ubuntu1.4
2.9.4+dfsg1-6.1ubuntu1.5
2.9.4+dfsg1-6.1ubuntu1.6
2.9.4+dfsg1-6.1ubuntu1.7
2.9.4+dfsg1-6.1ubuntu1.8
2.9.4+dfsg1-6.1ubuntu1.9
2.9.4+dfsg1-6.1ubuntu1.9+esm1
2.9.4+dfsg1-6.1ubuntu1.9+esm2
2.9.4+dfsg1-6.1ubuntu1.9+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2-dbg"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2-udeb"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "python-libxml2"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "python-libxml2-dbg"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "python3-libxml2"
        },
        {
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "binary_name": "python3-libxml2-dbg"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.9.10+dfsg-5ubuntu0.20.04.10+esm1?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+esm1

Affected versions

2.*

2.9.4+dfsg1-7ubuntu3
2.9.4+dfsg1-7ubuntu5
2.9.4+dfsg1-8ubuntu1
2.9.4+dfsg1-8ubuntu2
2.9.4+dfsg1-8ubuntu3
2.9.10+dfsg-1ubuntu3
2.9.10+dfsg-4build1
2.9.10+dfsg-5
2.9.10+dfsg-5ubuntu0.20.04.1
2.9.10+dfsg-5ubuntu0.20.04.2
2.9.10+dfsg-5ubuntu0.20.04.3
2.9.10+dfsg-5ubuntu0.20.04.4
2.9.10+dfsg-5ubuntu0.20.04.5
2.9.10+dfsg-5ubuntu0.20.04.6
2.9.10+dfsg-5ubuntu0.20.04.7
2.9.10+dfsg-5ubuntu0.20.04.8
2.9.10+dfsg-5ubuntu0.20.04.9
2.9.10+dfsg-5ubuntu0.20.04.10

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "libxml2-dbgsym"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "python-libxml2"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "python-libxml2-dbg"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "python3-libxml2"
        },
        {
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "binary_name": "python3-libxml2-dbg"
        }
    ]
}

Ubuntu:22.04:LTS / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.9.13+dfsg-1ubuntu0.8?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.13+dfsg-1ubuntu0.8

Affected versions

2.*

2.9.12+dfsg-4
2.9.12+dfsg-5
2.9.12+dfsg-6
2.9.13+dfsg-1
2.9.13+dfsg-1build1
2.9.13+dfsg-1ubuntu0.1
2.9.13+dfsg-1ubuntu0.2
2.9.13+dfsg-1ubuntu0.3
2.9.13+dfsg-1ubuntu0.4
2.9.13+dfsg-1ubuntu0.5
2.9.13+dfsg-1ubuntu0.6
2.9.13+dfsg-1ubuntu0.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "libxml2-dbgsym"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "python3-libxml2"
        },
        {
            "binary_version": "2.9.13+dfsg-1ubuntu0.8",
            "binary_name": "python3-libxml2-dbgsym"
        }
    ]
}

Ubuntu:24.04:LTS / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.9.14+dfsg-1.3ubuntu3.4?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.9.14+dfsg-1.3ubuntu3.4

Affected versions

2.*

2.9.14+dfsg-1.3
2.9.14+dfsg-1.3build1
2.9.14+dfsg-1.3build2
2.9.14+dfsg-1.3build3
2.9.14+dfsg-1.3ubuntu1
2.9.14+dfsg-1.3ubuntu2
2.9.14+dfsg-1.3ubuntu3
2.9.14+dfsg-1.3ubuntu3.1
2.9.14+dfsg-1.3ubuntu3.2
2.9.14+dfsg-1.3ubuntu3.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "libxml2-dbgsym"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "python3-libxml2"
        },
        {
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.4",
            "binary_name": "python3-libxml2-dbgsym"
        }
    ]
}

Ubuntu:25.04 / libxml2

Package

Name
libxml2
Purl
pkg:deb/ubuntu/libxml2@2.12.7+dfsg+really2.9.14-0.4ubuntu0.2?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.12.7+dfsg+really2.9.14-0.4ubuntu0.2

Affected versions

2.*

2.12.7+dfsg-3
2.12.7+dfsg+really2.9.14-0.2build1
2.12.7+dfsg+really2.9.14-0.2ubuntu2
2.12.7+dfsg+really2.9.14-0.2ubuntu3
2.12.7+dfsg+really2.9.14-0.2ubuntu4
2.12.7+dfsg+really2.9.14-0.2ubuntu5
2.12.7+dfsg+really2.9.14-0.4
2.12.7+dfsg+really2.9.14-0.4ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "libxml2"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "libxml2-dbgsym"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "libxml2-dev"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "libxml2-doc"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "libxml2-utils"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "libxml2-utils-dbgsym"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "python3-libxml2"
        },
        {
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
            "binary_name": "python3-libxml2-dbgsym"
        }
    ]
}