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UBUNTU SECURITY NOTICECANONICALVERIFIED

PUBLISHER UPDATE · USN-8821-1

USN-8821-1 release notes and known issues

USN-8821-1: OpenStack Swift vulnerability

Scope: Ubuntu. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.

Summary

It was discovered that OpenStack Swift incorrectly handled truncated aws-chunked PUT request bodies in its s3api middleware. An authenticated attacker could possibly use this issue to cause OpenStack Swift to use excessive resources, leading to a denial of service.

Improvements and security content

  • It was discovered that OpenStack Swift incorrectly handled truncated aws-chunked PUT request bodies in its s3api middleware. An authenticated attacker could possibly use this issue to cause OpenStack Swift to use excessive resources, leading to a denial of service.

Known issues

Publisher statement

Not stated. The verified publisher record does not contain a known-issues statement.

Affected products and versions

Products

  • Ubuntu

Affected versions

  • See the official publisher source for applicability.

Fixed versions or updates

  • No fixed version is stated in this record.

Recommended action

Review the official publisher document before deployment.

These links connect the publisher update to related Lifecycle records without treating the update publication date as an end-of-support date.

Official publisher evidence

CANONICALVERIFIED

USN-8821-1: OpenStack Swift vulnerability

Checked 28 Sep 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.

Open the official publisher source