USN-8723-1

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Source
https://ubuntu.com/security/notices/USN-8723-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8723-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8723-1
Upstream
CVE (2)
Related
UBUNTU (2)
Published
2026-09-03T12:43:08Z
Modified
2026-09-03T22:56:55Z
Summary
spice-vdagent vulnerabilities
Details

It was discovered that SPICE vdagent had an integer overflow in the buffer size calculation used when writing to the daemon socket. A malicious or compromised SPICE host could possibly use this issue to cause SPICE vdagent to crash, resulting in a denial of service. (CVE-2026-57965)

It was discovered that SPICE vdagent did not properly sanitize filenames provided by the SPICE host during file transfers. A malicious or compromised SPICE host could possibly use this issue to write arbitrary files to any location on the guest operating system with the privileges of the spice-vdagent process. (CVE-2026-57966)

References

Affected packages

Ubuntu:22.04:LTS / spice-vdagent

Package

Name
spice-vdagent
Purl
pkg:deb/ubuntu/spice-vdagent?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.22.1-1ubuntu0.1

Affected versions

0.*
0.20.0-2build1
0.20.0-3
0.22.1-1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "spice-vdagent",
            "binary_version":  "0.22.1-1ubuntu0.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-57965",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-57966",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8723-1.json"

Ubuntu:24.04:LTS / spice-vdagent

Package

Name
spice-vdagent
Purl
pkg:deb/ubuntu/spice-vdagent?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.22.1-4ubuntu0.1

Affected versions

0.*
0.22.1-3
0.22.1-4
0.22.1-4build1
0.22.1-4build2
0.22.1-4build3

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "spice-vdagent",
            "binary_version":  "0.22.1-4ubuntu0.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-57965",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-57966",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8723-1.json"

Ubuntu:26.04:LTS / spice-vdagent

Package

Name
spice-vdagent
Purl
pkg:deb/ubuntu/spice-vdagent?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.23.0-1ubuntu0.1

Affected versions

0.*
0.22.1-5
0.23.0-1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "spice-vdagent",
            "binary_version":  "0.23.0-1ubuntu0.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-57965",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-57966",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8723-1.json"