Proxmox Backup Server 4.2.7 → 4.2.9
2 releases · 0 breaking changes · 0 security fixes · 0 advisories fixed
0security0breaking0deprecated2feature4fix
Breaking changes
None in the release notes.
Security changes
None in the release notes.
Every release in between
4.2.9 Nov 3, 2026
otherdocs: installer: document the advanced network options
othersnapshot locking: improve error contexts, prefer short human readable format instead of struct-debug printing
otherdatastore: prefer standard library over custom unsafe code
otherdatastore: rephrase error messages for failed chunk insert, to direct users at running verification if required
fixfix #7746: cli: manager: show installed instead of candidate version
otherGC: fail on abnormal system time drifted between phase 1 and 2, to avoid dataloss in case of manual or automatic system clock adjustments during GC runtime
otherbackup API: reject snapshots created using future timestamps outside of configured "time skew" acceptance window
otherprune: ignore snapshots with backup timestamp in the future
otherapi: sync jobs: extend privilege checks when modifying sync job to cover pre-update configuration
featureauth: ldap/ad: reject empty passwords, which might be interpreted as unauthenticated binds if the backend server allows them
4.2.8 Oct 2, 2026
othertape: labeling: improve error message for tapes with existing data, making the need for formatting them easier to understand.
fixfix #8003: sync: pull: log skipped chunk reuse in case of failed verification. When the previous snapshot is marked as failed, the chunks referenced by it are not reused, but this fact was not logged before.
fixfix #6251: api: list tasks: skip running tasks when failed ones are requested, since a task that is still running cannot have failed.
othersync: refactor and improve ACL checks when setting up local pull sync jobs, encrypting or decrypting sync jobs and prune jobs.
featureapi: admin: add missing ACL check for GC status endpoint, correctly limiting it to users with audit or backup privs.
fixfixed index files: prevent out-of-bounds memory access in FixedIndexReader and restrict fixed index files to a chunk size of 4MB in general. The backup API only allowed creating fixed index files with such a chunk size in the first place, now this is enforced across the board.
othersync: pull: refactor handling of reusable chunks to include checking of chunk sizes, in addition to chunk digests. This prevents a misbehaving pull source from potentially creating inconsistent index files on the target.