# v19.2.5 Squid released

DevFeed: [v19.2.5 Squid released](<https://devfeed.tech/articles/v19-2-5-squid-released-12341.md>)

Original publisher: [Read original article](<https://ceph.io/en/news/blog/2026/v19-2-5-squid-released/>)

Author: Yuri Weinstein

Published: 2026-07-14T00:00:00Z

Content type: news

Language: en

Sources: [Ceph Blog](<https://devfeed.tech/sources/ceph-blog.md>)

Topics: [changelog](<https://devfeed.tech/topics/changelog.md>), [Amazon S3](<https://devfeed.tech/topics/amazon-s3.md>), [bug](<https://devfeed.tech/topics/bug.md>), [TLS (Transport Layer Security)](<https://devfeed.tech/topics/tls.md>), [Authentication](<https://devfeed.tech/topics/authentication.md>), [Authorization](<https://devfeed.tech/topics/authorization.md>), [SSL](<https://devfeed.tech/topics/ssl.md>)

Tags: [authentication](<https://devfeed.tech/tags/authentication.md>), [authorization](<https://devfeed.tech/tags/authorization.md>), [blog-post](<https://devfeed.tech/tags/blog-post.md>), [bug](<https://devfeed.tech/tags/bug.md>), [changelog](<https://devfeed.tech/tags/changelog.md>), [concurrent](<https://devfeed.tech/tags/concurrent.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [en-article](<https://devfeed.tech/tags/en-article.md>), [en-blog-post](<https://devfeed.tech/tags/en-blog-post.md>), [object-storage](<https://devfeed.tech/tags/object-storage.md>), [queuing](<https://devfeed.tech/tags/queuing.md>), [release](<https://devfeed.tech/tags/release.md>), [s3](<https://devfeed.tech/tags/s3.md>), [squid](<https://devfeed.tech/tags/squid.md>), [ssl](<https://devfeed.tech/tags/ssl.md>), [tls](<https://devfeed.tech/tags/tls.md>), [vector](<https://devfeed.tech/tags/vector.md>)

## AI overview

Ceph v19.2.5 Squid is the fifth backport release in the Squid series. It fixes issues across MDS, OSD, and RGW, including request queuing faults, rollback and erasure-coding behavior, TLS 1.3 cipher configuration, S3 ACL handling, multisite synchronization, policy evaluation, presigned URL authentication, object tagging, frontend concurrency, and bucket statistics.

## Source excerpt

This is the fifth backport release in the Squid series. We recommend all users update to this release. Notable Changes ¶ MDS (Metadata Server) ¶ Fixed a segmentation fault relating to MDSContext completion and request queuing. OSD (Object Storage Daemon) ¶ Rollback & Vector Fixes: Corrected rollback logic for partial write object information (OI) and optimized Erasure Coding (EC) by ensuring Twiddle creates a full-sized vector. RGW (RADOS Gateway) ¶ TLS 1.3 Ciphersuites: Introduced the ssl_ciphersuites configuration option for the Beast front-end to support TLS 1.3 cipher customizations. S3 PutObject ACLs Fix: Fixed a bug where PutObject requests were erroneously rejected under BlockPublicAcls due to an incorrect comparison return value from canned_acl.compare(). Multisite Sync Robustness: Resolved an infinite loop scenario in RGWBucketFullSyncCR when a source bucket was deleted mid-sync by introducing a mechanism to clear stateful data in reused bucket_list_result objects. SNS Policy Evaluation: Updated ListTopics to use the account root ARN for policy evaluation when invoked by a non-root account user, preventing unexpected implicit denies from identity-based policies. Presigned URLs: Fixed an internal server error occurring during the authentication process of presigned URLs. Prerequest Hook: Restructured the order of execution so that the prerequest hook now runs after the authorization process has completed. Object Tagging: Added handling for plain-text object tags during execution of RGWObjTags::decode(). Beast Frontend Stability: Applied a strand executor to the Beast timeout timer to avoid concurrent socket access and potential race conditions. Bucket Statistics: Added a fix for bucket stats execution when the underlying bucket index does not exist. Changelog ¶ [Stretch Mode] mon: restrict changing mon election strategy post stretch mode (pr#65458, Kamoltat Sirivadhna) Check if HTTP\_X\_AMZ\_COPY\_SOURCE header is empty (pr#66028, Suyash Dongre) Fix multifs