UBUNTU-CVE-2018-20996

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Source
https://ubuntu.com/security/CVE-2018-20996
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20996.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-20996
Upstream
Published
2019-08-26T18:15:00Z
Modified
2026-01-20T17:01:13.373027Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in the crossbeam crate before 0.4.1 for Rust. There is a double free because of destructor mishandling.

References

Affected packages

Ubuntu:20.04:LTS / rust-crossbeam-epoch

Package

Name
rust-crossbeam-epoch
Purl
pkg:deb/ubuntu/rust-crossbeam-epoch@0.7.2-3?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*

0.7.1-1
0.7.2-2
0.7.2-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-crossbeam-epoch+alloc-dev",
            "binary_version": "0.7.2-3"
        },
        {
            "binary_name": "librust-crossbeam-epoch+lazy-static-dev",
            "binary_version": "0.7.2-3"
        },
        {
            "binary_name": "librust-crossbeam-epoch+std-dev",
            "binary_version": "0.7.2-3"
        },
        {
            "binary_name": "librust-crossbeam-epoch-dev",
            "binary_version": "0.7.2-3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20996.json"

Ubuntu:22.04:LTS / rust-crossbeam-epoch

Package

Name
rust-crossbeam-epoch
Purl
pkg:deb/ubuntu/rust-crossbeam-epoch@0.8.2-2?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*

0.8.2-1
0.8.2-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-crossbeam-epoch+alloc-dev",
            "binary_version": "0.8.2-2"
        },
        {
            "binary_name": "librust-crossbeam-epoch+lazy-static-dev",
            "binary_version": "0.8.2-2"
        },
        {
            "binary_name": "librust-crossbeam-epoch+std-dev",
            "binary_version": "0.8.2-2"
        },
        {
            "binary_name": "librust-crossbeam-epoch-dev",
            "binary_version": "0.8.2-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20996.json"

Ubuntu:24.04:LTS / rust-crossbeam-epoch

Package

Name
rust-crossbeam-epoch
Purl
pkg:deb/ubuntu/rust-crossbeam-epoch@0.9.18-1?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*

0.9.13-1
0.9.18-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-crossbeam-epoch+std-dev",
            "binary_version": "0.9.18-1"
        },
        {
            "binary_name": "librust-crossbeam-epoch-dev",
            "binary_version": "0.9.18-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20996.json"

Ubuntu:25.10 / rust-crossbeam-epoch

Package

Name
rust-crossbeam-epoch
Purl
pkg:deb/ubuntu/rust-crossbeam-epoch@0.9.18-1?arch=source&distro=questing

Affected ranges

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

Affected versions

0.*

0.9.18-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-crossbeam-epoch+std-dev",
            "binary_version": "0.9.18-1"
        },
        {
            "binary_name": "librust-crossbeam-epoch-dev",
            "binary_version": "0.9.18-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20996.json"