Race Condition in Canonical Apport

• azl3 systemd 255-21 on Azure Linux 3.0

• cbl2 systemd 250.3-21

• cbl2 systemd-bootstrap 250.3-12 on CBL-Mariner 2.0

• cbl2 systemd 250.3-21 on CBL-Mariner 2.0

• azl3 systemd-bootstrap 250.3-17 on Azure Linux 3.0

• cbl2 systemd-bootstrap 250.3-12

Separate remediation guidance was not included in the collected bulletin.

1. Aug 7, 2026 at 12:41 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Aug 12, 2026 at 11:52 PM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

3. Sep 28, 2026 at 11:20 AM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

4. Oct 28, 2026 at 3:45 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.