UBUNTU-CVE-2026-44983

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-44983
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44983.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-44983
Upstream
  • CVE-2026-44983
Published
2026-05-26T22:16:00Z
Modified
2026-05-27T19:15:24.457322428Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

smallbitvec is a growable bit-vector for Rust, optimized for size. From 1.0.1 to 2.6.0, an integer overflow in the internal capacity calculation of smallbitvec can lead to an undersized heap allocation, resulting in a heap buffer overflow through safe APIs only. This allows memory corruption without requiring unsafe code from the caller. This vulnerability is fixed in 2.6.1.

References

Affected packages

Ubuntu:22.04:LTS / rust-smallbitvec

Package

Name
rust-smallbitvec
Purl
pkg:deb/ubuntu/rust-smallbitvec?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.5.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.5.1-1",
            "binary_name": "librust-smallbitvec-dev"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44983.json"

Ubuntu:24.04:LTS / rust-smallbitvec

Package

Name
rust-smallbitvec
Purl
pkg:deb/ubuntu/rust-smallbitvec?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.5.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.5.1-1",
            "binary_name": "librust-smallbitvec-dev"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44983.json"

Ubuntu:25.10 / rust-smallbitvec

Package

Name
rust-smallbitvec
Purl
pkg:deb/ubuntu/rust-smallbitvec?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.5.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.5.1-1",
            "binary_name": "librust-smallbitvec-dev"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44983.json"

Ubuntu:26.04:LTS / rust-smallbitvec

Package

Name
rust-smallbitvec
Purl
pkg:deb/ubuntu/rust-smallbitvec?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.5.1-1
2.5.1-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.5.1-1build1",
            "binary_name": "librust-smallbitvec-dev"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44983.json"