UBUNTU-CVE-2026-42764

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Source
https://ubuntu.com/security/CVE-2026-42764
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42764.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-42764
Upstream
Downstream
Related
Published
2026-06-09T00:00:00Z
Modified
2026-06-12T09:12:22.820552377Z
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

Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation disabled. Impact summary: NULL pointer dereference typically causes abnormal termination of the affected QUIC server process and a Denial of Service. If the address validation is disabled in the OpenSSL QUIC server implementation, an attacker can crash the server by sending an initial packet with an invalid or expired token. By default, the client address validation is enabled in the OpenSSL QUIC server implementation, which makes the default configuration not vulnerable to this issue. However if the SSLLISTENERFLAGNOVALIDATE is used with the SSLnewlistener() call, the address validation is disabled making the vulnerable code reachable. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

References

Affected packages

Ubuntu:Pro:22.04:LTS / nodejs

Package

Name
nodejs
Purl
pkg:deb/ubuntu/nodejs?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

12.*
12.22.5~dfsg-5ubuntu1
12.22.7~dfsg-2ubuntu1
12.22.7~dfsg-2ubuntu3
12.22.9~dfsg-1ubuntu2
12.22.9~dfsg-1ubuntu3
12.22.9~dfsg-1ubuntu3.1
12.22.9~dfsg-1ubuntu3.2
12.22.9~dfsg-1ubuntu3.3
12.22.9~dfsg-1ubuntu3.4
12.22.9~dfsg-1ubuntu3.5
12.22.9~dfsg-1ubuntu3.6
12.22.9~dfsg-1ubuntu3.6+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2",
            "binary_name": "libnode72"
        },
        {
            "binary_name": "nodejs",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42764.json"

Ubuntu:25.10 / openssl

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.3-1ubuntu3.4

Affected versions

3.*
3.4.1-1ubuntu3
3.5.0-2ubuntu1
3.5.2-1ubuntu1
3.5.3-1ubuntu2
3.5.3-1ubuntu3
3.5.3-1ubuntu3.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.5.3-1ubuntu3.4",
            "binary_name": "libssl3t64"
        },
        {
            "binary_version": "3.5.3-1ubuntu3.4",
            "binary_name": "openssl"
        },
        {
            "binary_name": "openssl-provider-legacy",
            "binary_version": "3.5.3-1ubuntu3.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42764.json"

Ubuntu:26.04:LTS / edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2025.*
2025.02-8ubuntu3
2025.11-3ubuntu6
2025.11-3ubuntu7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "efi-shell-aa64",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_name": "efi-shell-loongarch64",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_name": "efi-shell-riscv64",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_version": "2025.11-3ubuntu7",
            "binary_name": "efi-shell-x64"
        },
        {
            "binary_version": "2025.11-3ubuntu7",
            "binary_name": "ovmf"
        },
        {
            "binary_name": "ovmf-amdsev",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_version": "2025.11-3ubuntu7",
            "binary_name": "ovmf-generic"
        },
        {
            "binary_name": "ovmf-inteltdx",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_name": "ovmf-legacy",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_name": "qemu-efi-loongarch64",
            "binary_version": "2025.11-3ubuntu7"
        },
        {
            "binary_name": "qemu-efi-riscv64",
            "binary_version": "2025.11-3ubuntu7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42764.json"

Ubuntu:26.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.5-1ubuntu3.2

Affected versions

3.*
3.5.3-1ubuntu2
3.5.5-1ubuntu1
3.5.5-1ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl3t64",
            "binary_version": "3.5.5-1ubuntu3.2"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.5.5-1ubuntu3.2"
        },
        {
            "binary_name": "openssl-provider-legacy",
            "binary_version": "3.5.5-1ubuntu3.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42764.json"