UBUNTU-CVE-2026-54902

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Source

https://ubuntu.com/security/CVE-2026-54902

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-54902

Upstream

CVE-2026-54902

Published

2026-07-01T00:16:00Z

Modified

2026-07-01T23:43:25.446505344Z

Severity

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

Summary

[none]

Details

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to version 3.17.2, is vulnerable to Use-After-Free when in SAJ mode. The Oj::Parser does not protect cached object keys (≥ 35 bytes) from garbage collection, and a Ruby callback that triggers GC inside hash_end can cause the key string to be reclaimed while the C parser still holds a pointer to it. The subsequent access to the freed string VALUE results in a segfault, confirmed by an RIP pointing to address 0x4242 (a canary-style pattern suggesting control over the freed memory's content). This issue has been fixed in version 3.17.2.

References

Affected packages

Ubuntu:14.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.10-1

2.1.4-1

2.4.0-1

2.5.3-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "2.5.3-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:16.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.12.10-3

2.12.10-3build1

2.12.10-4

2.12.10-4build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "2.12.10-4build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:18.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.17.4-1

3.*

3.4.0-1

3.4.0-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "3.4.0-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:20.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.8.1-1

3.9.1-1

3.9.2-1

3.10.1-1

3.10.1-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "3.10.1-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:22.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.11.0-1

3.13.7-1

3.13.7-1build1

3.13.9-1

3.13.9-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "3.13.9-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:24.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.15.0-1

3.16.1-1

3.16.3-1

3.16.3-1build1

3.16.3-1build2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "3.16.3-1build2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:25.10

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.16.3-1build3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "3.16.3-1build3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"

Ubuntu:26.04:LTS

ruby-oj

Package

Name: ruby-oj
Purl: pkg:deb/ubuntu/ruby-oj?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.16.3-1build3

3.16.12-1

3.16.15-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-oj",
            "binary_version": "3.16.15-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54902.json"