UBUNTU-CVE-2026-73860

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Source

https://ubuntu.com/security/CVE-2026-73860

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73860.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-73860

Upstream

CVE-2026-73860

Published

2026-11-09T00:00:00Z

Modified

2026-11-10T02:51:22Z

Severity

5.4 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

CRIU is a checkpoint and restore tool for Linux. Prior to 4.2.1, CRIU injects a syscall;int3 sequence at the start of the first executable virtual memory area and resumes the target process to execute parasite code. Malicious code in the target process can keep an rseq critical section armed over that injection point so the kernel's restartable-sequence abort redirects execution to an attacker-controlled callback when CRIU resumes the process. In container snapshot environments, the hijacked parasite runs with seccomp disabled and a relaxed AppArmor profile and supplies trusted data to the privileged CRIU process, which can enable higher-privilege code execution. This issue is fixed in version 4.2.1.

References

Affected packages

Ubuntu:16.04:LTS / criu

Package

Name: criu
Purl: pkg:deb/ubuntu/criu?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.7-2

1.7-3

1.7.2-1

1.7.2-2

1.8-2

2.*

2.0-2ubuntu1

2.0-2ubuntu2

2.0-2ubuntu3

2.6-1ubuntu1~ubuntu16.04.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "criu",
            "binary_version": "2.6-1ubuntu1~ubuntu16.04.2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73860.json"

Ubuntu:18.04:LTS / criu

Package

Name: criu
Purl: pkg:deb/ubuntu/criu?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.4-3

3.5-2

3.6-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "criu",
            "binary_version": "3.6-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73860.json"

Ubuntu:22.04:LTS / criu

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.14-1

3.16.1-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "criu",
            "binary_version": "3.16.1-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73860.json"

Ubuntu:26.10 / criu

Package

Name: criu
Purl: pkg:deb/ubuntu/criu?arch=source&distro=stonking

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.2-1ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "criu",
            "binary_version": "4.2-1ubuntu2"
        },
        {
            "binary_name": "libcompel1",
            "binary_version": "4.2-1ubuntu2"
        },
        {
            "binary_name": "libcriu2",
            "binary_version": "4.2-1ubuntu2"
        },
        {
            "binary_name": "python3-pycriu",
            "binary_version": "4.2-1ubuntu2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73860.json"

Ubuntu:26.04:LTS / criu

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.1.1-1build1

4.2-1ubuntu1

4.2-1ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "criu",
            "binary_version": "4.2-1ubuntu2"
        },
        {
            "binary_name": "libcompel1",
            "binary_version": "4.2-1ubuntu2"
        },
        {
            "binary_name": "libcriu2",
            "binary_version": "4.2-1ubuntu2"
        },
        {
            "binary_name": "python3-pycriu",
            "binary_version": "4.2-1ubuntu2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73860.json"