UBUNTU-CVE-2025-31115

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Source
https://ubuntu.com/security/CVE-2025-31115
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-31115.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-31115
Related
Published
2025-04-03T15:00:00Z
Modified
2025-04-10T08:48:32Z
Summary
[none]
Details

XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzmastreamdecoder_mt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.

References

Affected packages

Ubuntu:20.04:LTS / xz-utils

Package

Name
xz-utils
Purl
pkg:deb/ubuntu/xz-utils@5.2.4-1ubuntu1.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.2.4-1ubuntu1.1

Affected versions

5.*

5.2.4-1
5.2.4-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "liblzma-dev"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "liblzma-doc"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "liblzma5"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "liblzma5-dbgsym"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "xz-utils"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "xz-utils-dbgsym"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "xzdec"
        },
        {
            "binary_version": "5.2.4-1ubuntu1.1",
            "binary_name": "xzdec-dbgsym"
        }
    ]
}

Ubuntu:22.04:LTS / xz-utils

Package

Name
xz-utils
Purl
pkg:deb/ubuntu/xz-utils@5.2.5-2ubuntu1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.2.5-2ubuntu1

Affected versions

5.*

5.2.5-2
5.2.5-2build1
5.2.5-2build2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "liblzma-dev"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "liblzma-doc"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "liblzma5"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "liblzma5-dbgsym"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "xz-utils"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "xz-utils-dbgsym"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "xzdec"
        },
        {
            "binary_version": "5.2.5-2ubuntu1",
            "binary_name": "xzdec-dbgsym"
        }
    ]
}

Ubuntu:24.10 / xz-utils

Package

Name
xz-utils
Purl
pkg:deb/ubuntu/xz-utils@5.6.2-2ubuntu0.2?arch=source&distro=oracular

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.6.2-2ubuntu0.2

Affected versions

5.*

5.6.1+really5.4.5-1
5.6.2-1
5.6.2-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "liblzma-dev"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "liblzma-doc"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "liblzma5"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "liblzma5-dbgsym"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "xz-utils"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "xz-utils-dbgsym"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "xzdec"
        },
        {
            "binary_version": "5.6.2-2ubuntu0.2",
            "binary_name": "xzdec-dbgsym"
        }
    ]
}

Ubuntu:24.04:LTS / xz-utils

Package

Name
xz-utils
Purl
pkg:deb/ubuntu/xz-utils@5.6.1+really5.4.5-1ubuntu0.2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.6.1+really5.4.5-1ubuntu0.2

Affected versions

5.*

5.4.1-0.2
5.4.4-0.1
5.4.5-0.1
5.4.5-0.3
5.6.0-0.2
5.6.1+really5.4.5-1
5.6.1+really5.4.5-1build0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "liblzma-dev"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "liblzma-doc"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "liblzma5"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "liblzma5-dbgsym"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "xz-utils"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "xz-utils-dbgsym"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "xzdec"
        },
        {
            "binary_version": "5.6.1+really5.4.5-1ubuntu0.2",
            "binary_name": "xzdec-dbgsym"
        }
    ]
}