[Bug]: Memory exhausted when syncing calendar via calDAV

[MaggiWuerze]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• Nextcloud Server is running on 64bit capable CPU, PHP and OS.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When syncing my calendar to my Android phone using DAV5x it fails with a "server side error". Checking the Nextcloud Log I found the following error, that comes up every time it tries to sync.

Allowed memory size of 2147483648 bytes exhausted (tried to allocate 4096 bytes) at /nextcloud/3rdparty/sabre/vobject/lib/Recur/RRuleIterator.php#680

Steps to reproduce

1.Set up DAVx5
2.Try to sync new events to the cloud
3.Have it fail with mentioned error

Expected behavior

Syncing without an error, like before

Installation method

Community Docker image

Nextcloud Server version

25

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Nginx

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Updated to a major version (ex. 22.2.3 to 23.0.1)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "system": {
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "theme": "",
        "apps_paths": [
            {
                "path": "\/nextcloud\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/nextcloud\/apps2",
                "url": "\/apps2",
                "writable": true
            }
        ],
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "cloud.***.de"
        ],
        "overwrite.cli.url": "https:\/\/cloud.maggiwuerze.de",
        "overwriteprotocol": "https",
        "dbtype": "mysql",
        "version": "25.0.5.1",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "logtimezone": "Etc\/UTC",
        "logdateformat": "Y-m-d H:i:s",
        "maintenance": false,
        "updater.release.channel": "stable",
        "mail_smtpmode": "smtp",
        "mail_smtpauthtype": "LOGIN",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpauth": 1,
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "loglevel": 0,
        "trashbin_retention_obligation": "auto, 30",
        "mail_sendmailmode": "smtp"
    }
}

List of activated Apps

Enabled:
  - activity: 2.17.0
  - audioplayer: 3.3.1
  - calendar: 4.3.2
  - circles: 25.0.0
  - cloud_federation_api: 1.8.0
  - comments: 1.15.0
  - contactsinteraction: 1.6.0
  - dav: 1.24.0
  - drawio: 2.1.0
  - federatedfilesharing: 1.15.0
  - federation: 1.15.0
  - files: 1.20.1
  - files_3dmodelviewer: 0.0.7
  - files_external: 1.17.0
  - files_pdfviewer: 2.6.0
  - files_rightclick: 1.4.0
  - files_sharing: 1.17.0
  - files_trashbin: 1.15.0
  - files_versions: 1.18.0
  - forms: 3.2.0
  - logreader: 2.10.0
  - lookup_server_connector: 1.13.0
  - metadata: 0.18.0
  - news: 21.1.0
  - nextcloud_announcements: 1.14.0
  - notes: 4.7.2
  - notifications: 2.13.1
  - oauth2: 1.13.0
  - onlyoffice: 7.8.0
  - password_policy: 1.15.0
  - photos: 2.0.1
  - privacy: 1.9.0
  - provisioning_api: 1.15.0
  - recommendations: 1.4.0
  - related_resources: 1.0.4
  - serverinfo: 1.15.0
  - settings: 1.7.0
  - sharebymail: 1.15.0
  - support: 1.8.0
  - survey_client: 1.13.0
  - systemtags: 1.15.0
  - tasks: 0.14.5
  - text: 3.6.0
  - theming: 2.0.1
  - twofactor_backupcodes: 1.14.0
  - twofactor_totp: 7.0.0
  - updatenotification: 1.15.0
  - viewer: 1.9.0
  - workflowengine: 2.7.0
Disabled:
  - admin_audit
  - analytics: 4.8.0
  - breezedark: 25.0.2
  - bruteforcesettings: 2.2.0
  - dashboard: 7.0.0
  - encryption
  - extract: 1.3.5
  - files_3d: 0.5.0
  - firstrunwizard: 2.1
  - flowupload: 1.1.3
  - mail: 2.2.5
  - spreed: 15.0.5
  - suspicious_login
  - unsplash: 2.2.0
  - user_ldap
  - user_status: 1.0.1
  - weather_status: 1.0.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

No response

Additional info

No response

[joshtrichards]

Looks like you resolved this and it was an issue with third-party security module: hoellen/docker-nextcloud#26