UBUNTU-CVE-2026-49017

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Source

https://ubuntu.com/security/CVE-2026-49017

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49017.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-49017

Upstream

CVE-2026-49017

Published

2026-05-27T02:16:00Z

Modified

2026-06-09T21:17:22.938999500Z

Severity

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

Summary

[none]

Details

In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0.

References

Affected packages

Ubuntu:25.10 / swift

Package

Name: swift
Purl: pkg:deb/ubuntu/swift?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.35.0-0ubuntu1

2.35.0+git2025070714.1428eb3b5-0ubuntu1

2.36.0-0ubuntu1

2.36.0-0ubuntu1.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python3-swift",
            "binary_version": "2.36.0-0ubuntu1.1"
        },
        {
            "binary_name": "swift",
            "binary_version": "2.36.0-0ubuntu1.1"
        },
        {
            "binary_name": "swift-account",
            "binary_version": "2.36.0-0ubuntu1.1"
        },
        {
            "binary_name": "swift-container",
            "binary_version": "2.36.0-0ubuntu1.1"
        },
        {
            "binary_name": "swift-object",
            "binary_version": "2.36.0-0ubuntu1.1"
        },
        {
            "binary_name": "swift-object-expirer",
            "binary_version": "2.36.0-0ubuntu1.1"
        },
        {
            "binary_name": "swift-proxy",
            "binary_version": "2.36.0-0ubuntu1.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49017.json"

Ubuntu:26.04:LTS / swift