UBUNTU-CVE-2026-81872

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Source
https://ubuntu.com/security/CVE-2026-81872
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81872.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-81872
Upstream
Published
2026-09-18T00:00:00Z
Modified
2026-09-18T12:30:21Z
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

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is backpressured. NewBatchingProcessor wraps the exporter with newBufferExporter(exporter, 1), and the poll loop calls queue.TryDequeue and bufferExporter.EnqueueExport before immediately signaling pollTrigger whenever the queue remains at or above batchSize. Because a failed nonblocking EnqueueExport leaves the queue length unchanged, the processor repeatedly retries without waiting for its ticker, exhausting CPU and degrading or denying service in the embedding process. This issue is fixed in version 0.21.0.

References

Affected packages

Ubuntu:22.04:LTS / golang-opentelemetry-otel

Package

Name
golang-opentelemetry-otel
Purl
pkg:deb/ubuntu/golang-opentelemetry-otel?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.1.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-opentelemetry-otel-dev",
            "binary_version": "1.1.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81872.json"

Ubuntu:24.04:LTS / golang-opentelemetry-otel

Package

Name
golang-opentelemetry-otel
Purl
pkg:deb/ubuntu/golang-opentelemetry-otel?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.16.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-opentelemetry-otel-dev",
            "binary_version": "1.16.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81872.json"

Ubuntu:26.04:LTS / golang-opentelemetry-otel

Package

Name
golang-opentelemetry-otel
Purl
pkg:deb/ubuntu/golang-opentelemetry-otel?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.31.0-4
1.31.0-5
1.31.0-6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-opentelemetry-otel-dev",
            "binary_version": "1.31.0-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81872.json"