UBUNTU-CVE-2025-11234

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Source
https://ubuntu.com/security/CVE-2025-11234
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11234.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2025-11234
Upstream
Downstream
Related
Published
2025-10-03T11:15:00Z
Modified
2026-06-09T21:29:24Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.

References

Affected packages

Ubuntu:Pro:18.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:2.11+dfsg-1ubuntu7.42+esm5

Affected versions

1:2.*
1:2.10+dfsg-0ubuntu3
1:2.10+dfsg-0ubuntu4
1:2.10+dfsg-0ubuntu5
1:2.11+dfsg-1ubuntu1
1:2.11+dfsg-1ubuntu2
1:2.11+dfsg-1ubuntu4
1:2.11+dfsg-1ubuntu5
1:2.11+dfsg-1ubuntu6
1:2.11+dfsg-1ubuntu7
1:2.11+dfsg-1ubuntu7.1
1:2.11+dfsg-1ubuntu7.2
1:2.11+dfsg-1ubuntu7.3
1:2.11+dfsg-1ubuntu7.4
1:2.11+dfsg-1ubuntu7.5
1:2.11+dfsg-1ubuntu7.6
1:2.11+dfsg-1ubuntu7.7
1:2.11+dfsg-1ubuntu7.8
1:2.11+dfsg-1ubuntu7.9
1:2.11+dfsg-1ubuntu7.10
1:2.11+dfsg-1ubuntu7.12
1:2.11+dfsg-1ubuntu7.13
1:2.11+dfsg-1ubuntu7.14
1:2.11+dfsg-1ubuntu7.15
1:2.11+dfsg-1ubuntu7.17
1:2.11+dfsg-1ubuntu7.18
1:2.11+dfsg-1ubuntu7.19
1:2.11+dfsg-1ubuntu7.20
1:2.11+dfsg-1ubuntu7.21
1:2.11+dfsg-1ubuntu7.22
1:2.11+dfsg-1ubuntu7.23
1:2.11+dfsg-1ubuntu7.25
1:2.11+dfsg-1ubuntu7.26
1:2.11+dfsg-1ubuntu7.27
1:2.11+dfsg-1ubuntu7.28
1:2.11+dfsg-1ubuntu7.29
1:2.11+dfsg-1ubuntu7.31
1:2.11+dfsg-1ubuntu7.32
1:2.11+dfsg-1ubuntu7.33
1:2.11+dfsg-1ubuntu7.34
1:2.11+dfsg-1ubuntu7.35
1:2.11+dfsg-1ubuntu7.36
1:2.11+dfsg-1ubuntu7.37
1:2.11+dfsg-1ubuntu7.38
1:2.11+dfsg-1ubuntu7.39
1:2.11+dfsg-1ubuntu7.40
1:2.11+dfsg-1ubuntu7.41
1:2.11+dfsg-1ubuntu7.42
1:2.11+dfsg-1ubuntu7.42+esm1
1:2.11+dfsg-1ubuntu7.42+esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-kvm",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:2.11+dfsg-1ubuntu7.42+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11234.json"

Ubuntu:Pro:20.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:4.2-3ubuntu6.30+esm1

Affected versions

1:4.*
1:4.0+dfsg-0ubuntu9
1:4.0+dfsg-0ubuntu10
1:4.2-1ubuntu1
1:4.2-1ubuntu2
1:4.2-3ubuntu1
1:4.2-3ubuntu2
1:4.2-3ubuntu3
1:4.2-3ubuntu4
1:4.2-3ubuntu5
1:4.2-3ubuntu6
1:4.2-3ubuntu6.1
1:4.2-3ubuntu6.2
1:4.2-3ubuntu6.3
1:4.2-3ubuntu6.4
1:4.2-3ubuntu6.5
1:4.2-3ubuntu6.6
1:4.2-3ubuntu6.7
1:4.2-3ubuntu6.8
1:4.2-3ubuntu6.9
1:4.2-3ubuntu6.10
1:4.2-3ubuntu6.11
1:4.2-3ubuntu6.12
1:4.2-3ubuntu6.14
1:4.2-3ubuntu6.15
1:4.2-3ubuntu6.16
1:4.2-3ubuntu6.17
1:4.2-3ubuntu6.18
1:4.2-3ubuntu6.19
1:4.2-3ubuntu6.21
1:4.2-3ubuntu6.23
1:4.2-3ubuntu6.24
1:4.2-3ubuntu6.25
1:4.2-3ubuntu6.26
1:4.2-3ubuntu6.27
1:4.2-3ubuntu6.28
1:4.2-3ubuntu6.29
1:4.2-3ubuntu6.30

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-kvm",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:4.2-3ubuntu6.30+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11234.json"

Ubuntu:22.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:6.2+dfsg-2ubuntu6.28

Affected versions

1:6.*
1:6.0+dfsg-2expubuntu1
1:6.0+dfsg-2expubuntu2
1:6.0+dfsg-2expubuntu4
1:6.2+dfsg-2ubuntu5
1:6.2+dfsg-2ubuntu6
1:6.2+dfsg-2ubuntu6.1
1:6.2+dfsg-2ubuntu6.2
1:6.2+dfsg-2ubuntu6.3
1:6.2+dfsg-2ubuntu6.4
1:6.2+dfsg-2ubuntu6.5
1:6.2+dfsg-2ubuntu6.6
1:6.2+dfsg-2ubuntu6.7
1:6.2+dfsg-2ubuntu6.8
1:6.2+dfsg-2ubuntu6.9
1:6.2+dfsg-2ubuntu6.10
1:6.2+dfsg-2ubuntu6.11
1:6.2+dfsg-2ubuntu6.12
1:6.2+dfsg-2ubuntu6.13
1:6.2+dfsg-2ubuntu6.14
1:6.2+dfsg-2ubuntu6.15
1:6.2+dfsg-2ubuntu6.16
1:6.2+dfsg-2ubuntu6.17
1:6.2+dfsg-2ubuntu6.18
1:6.2+dfsg-2ubuntu6.19
1:6.2+dfsg-2ubuntu6.21
1:6.2+dfsg-2ubuntu6.22
1:6.2+dfsg-2ubuntu6.23
1:6.2+dfsg-2ubuntu6.24
1:6.2+dfsg-2ubuntu6.25
1:6.2+dfsg-2ubuntu6.26
1:6.2+dfsg-2ubuntu6.27

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:6.2+dfsg-2ubuntu6.28"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11234.json"

Ubuntu:24.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2.2+ds-0ubuntu1.13

Affected versions

1:8.*
1:8.0.4+dfsg-1ubuntu3
1:8.0.4+dfsg-1ubuntu4
1:8.0.4+dfsg-1ubuntu5
1:8.1.3+ds-1ubuntu2
1:8.2.1+ds-1ubuntu1
1:8.2.1+ds-1ubuntu8
1:8.2.1+ds-1ubuntu9
1:8.2.2+ds-0ubuntu1
1:8.2.2+ds-0ubuntu1.2
1:8.2.2+ds-0ubuntu1.4
1:8.2.2+ds-0ubuntu1.5
1:8.2.2+ds-0ubuntu1.6
1:8.2.2+ds-0ubuntu1.7
1:8.2.2+ds-0ubuntu1.8
1:8.2.2+ds-0ubuntu1.9
1:8.2.2+ds-0ubuntu1.10
1:8.2.2+ds-0ubuntu1.11
1:8.2.2+ds-0ubuntu1.12

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-block-supplemental",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-modules-opengl",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-modules-spice",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-system-xen",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:8.2.2+ds-0ubuntu1.13"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11234.json"

Ubuntu:25.10 / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:10.1.0+ds-5ubuntu2.4

Affected versions

1:9.*
1:9.2.1+ds-1ubuntu5
1:10.*
1:10.0.2+ds-1ubuntu1
1:10.0.2+ds-1ubuntu2
1:10.1.0+ds-1ubuntu1
1:10.1.0+ds-5ubuntu1
1:10.1.0+ds-5ubuntu2
1:10.1.0+ds-5ubuntu2.1
1:10.1.0+ds-5ubuntu2.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-block-supplemental",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-modules-opengl",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-modules-spice",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-riscv",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-system-xen",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:10.1.0+ds-5ubuntu2.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11234.json"