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    CVE-2025-39779: Linux Btrfs Writeback Bug Threatens Availability

    A Linux kernel bug in the Btrfs filesystem — tracked as CVE-2025-39779 — can cause write-ordering guarantees to be violated by prematurely clearing the PAGECACHE_TAG_TOWRITE tag on subpage folios, with downstream effects that include kernel assertions, crashes, and availability failures...
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    • btrfs cve vulnerabilities linux kernel writeback
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    • Forum: Security Alerts
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    Cloud-Managed Remote Mailboxes: Ending the Last Exchange Server in Hybrid Deployments

    Microsoft’s new cloud-managed remote mailbox capability finally gives hybrid organizations a supported, auditable path to stop running an on‑premises Exchange server purely for recipient management — and it changes the rules for how Exchange attributes are governed in hybrid environments. The...
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    • admin center attribute-cloud-management audit logs cloud-managed entra connect sync exchange hybrid exchange online exchange-online-powershell hybrid identity isexchangecloudmanaged mailbox on-prem ad rbac remote-mailboxes source-of-authority writeback
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    • Forum: Windows News
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    Cloud-Managed Remote Mailboxes: A Step Toward Retiring the Last Exchange Server

    Microsoft’s Exchange team has taken a decisive step toward finally letting organizations retire the last Exchange server in hybrid environments by adding cloud-managed remote mailbox support — a per-mailbox “flip-the-switch” that transfers Exchange attribute authority to Exchange Online while...
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    • active directory admin consent audit logs certificate management cisa-ed-25-02 cloud migration cloud writeback cloud-managed-remote-mailboxes compliance auditing configureexchangehybridapplication.ps1 cve-2025-53786 entra connect sync entra id ews block exchange hybrid exchange on-prem exchange online folder sync freebusy hybrid apps hybrid configuration wizard hybrid deployment identity management isexchangecloudmanaged last-exchange-server mailbox attributes mailtips microsoft education oauth on-prem ad patch management phase 1 preview phase 2 writeback phase-1 phase-2 powershell profile picture proxyaddresses rbac rich coexistence security hardening setting override writeback
    • Replies: 2
    • Forum: Windows News
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