USN-7849-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-7849-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-7849-1
Upstream
Related
Published
2025-11-04T09:36:34.508030Z
Modified
2025-11-05T11:02:42.708203Z
Summary
libssh vulnerability
Details

Philippe Antoine discovered that libssh did not properly manage memory when calculating a session id during the key exchange process. An attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:22.04:LTS

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.9.6-2ubuntu0.22.04.5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.6-2ubuntu0.22.04.5

Affected versions

0.*

0.9.6-1
0.9.6-1build1
0.9.6-2
0.9.6-2build1
0.9.6-2ubuntu0.22.04.1
0.9.6-2ubuntu0.22.04.2
0.9.6-2ubuntu0.22.04.3
0.9.6-2ubuntu0.22.04.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.9.6-2ubuntu0.22.04.5"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.9.6-2ubuntu0.22.04.5"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.9.6-2ubuntu0.22.04.5"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.9.6-2ubuntu0.22.04.5"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}

Ubuntu:24.04:LTS

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.10.6-2ubuntu0.2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.10.6-2ubuntu0.2

Affected versions

0.*

0.10.5-3ubuntu1
0.10.5-3ubuntu2
0.10.6-2
0.10.6-2build1
0.10.6-2build2
0.10.6-2ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.10.6-2ubuntu0.2"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.10.6-2ubuntu0.2"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.10.6-2ubuntu0.2"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.10.6-2ubuntu0.2"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:24.04:LTS"
}

Ubuntu:25.04

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.11.1-1ubuntu0.2?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.11.1-1ubuntu0.2

Affected versions

0.*

0.10.6-3ubuntu1
0.11.1-1
0.11.1-1ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.11.1-1ubuntu0.2"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.11.1-1ubuntu0.2"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:25.04"
}

Ubuntu:25.10

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.11.2-1ubuntu0.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.11.2-1ubuntu0.1

Affected versions

0.*

0.11.1-1
0.11.1-2
0.11.2-1
0.11.2-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.11.2-1ubuntu0.1"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.11.2-1ubuntu0.1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:25.10"
}

Ubuntu:Pro:16.04:LTS

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.6.3-4.3ubuntu0.6+esm3?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.6.3-4.3ubuntu0.6+esm3

Affected versions

0.*

0.6.3-3ubuntu3
0.6.3-4.1
0.6.3-4.2
0.6.3-4.2ubuntu1
0.6.3-4.3
0.6.3-4.3ubuntu0.1
0.6.3-4.3ubuntu0.2
0.6.3-4.3ubuntu0.5
0.6.3-4.3ubuntu0.6
0.6.3-4.3ubuntu0.6+esm1
0.6.3-4.3ubuntu0.6+esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.6.3-4.3ubuntu0.6+esm3"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.6.3-4.3ubuntu0.6+esm3"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.6.3-4.3ubuntu0.6+esm3"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.6.3-4.3ubuntu0.6+esm3"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}

Ubuntu:Pro:18.04:LTS

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5

Affected versions

0.*

0.7.5-1
0.8.0~20170825.94fa1e38-1
0.8.0~20170825.94fa1e38-1build1
0.8.0~20170825.94fa1e38-1ubuntu0.1
0.8.0~20170825.94fa1e38-1ubuntu0.2
0.8.0~20170825.94fa1e38-1ubuntu0.5
0.8.0~20170825.94fa1e38-1ubuntu0.6
0.8.0~20170825.94fa1e38-1ubuntu0.7
0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3
0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}

Ubuntu:Pro:20.04:LTS

libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.9.3-2ubuntu2.5+esm2?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.3-2ubuntu2.5+esm2

Affected versions

0.*

0.9.0-1ubuntu1
0.9.0-1ubuntu4
0.9.0-1ubuntu5
0.9.3-2ubuntu1
0.9.3-2ubuntu2
0.9.3-2ubuntu2.1
0.9.3-2ubuntu2.2
0.9.3-2ubuntu2.3
0.9.3-2ubuntu2.4
0.9.3-2ubuntu2.5
0.9.3-2ubuntu2.5+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.9.3-2ubuntu2.5+esm2"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.9.3-2ubuntu2.5+esm2"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.9.3-2ubuntu2.5+esm2"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.9.3-2ubuntu2.5+esm2"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2025-8114",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}