github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files

• azl3 containerd2 2.3.4-1 on Azure Linux 3.0

• azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0

• azl3 docker-compose 2.27.0-14 on Azure Linux 3.0

• azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0

• azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0

• azl3 kubernetes 1.30.10-30 on Azure Linux 3.0

• azl3 kubevirt 1.8.4-2 on Azure Linux 3.0

• azl3 moby-engine 25.0.3-20 on Azure Linux 3.0

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

1. Oct 18, 2026 at 12:25 PM UTC
   • Added fixed versions: 1.8.4-4, 2.3.7-1.
2. Oct 17, 2026 at 12:05 PM UTC
   • Added fixed versions: 1.4.3-2, 1.62.0-9, 2.27.0-16, 25.0.18-1.
3. Oct 16, 2026 at 11:45 AM UTC
   • Removed affected products: azl3 docker-buildx 0.14.0-17 on Azure Linux 3.0, azl3 docker-cli 25.0.7-5 on Azure Linux 3.0, azl3 libcontainers-common 20240213-3 on Azure Linux 3.0.
4. Oct 15, 2026 at 11:25 AM UTC
   • Added fixed versions: 1.14.4-14, 1.31.0-35.
5. Oct 13, 2026 at 10:45 AM UTC
   • Added affected products: azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-buildx 0.14.0-17 on Azure Linux 3.0, azl3 docker-cli 25.0.7-5 on Azure Linux 3.0, azl3 docker-compose....

1. Oct 11, 2026 at 1:50 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Oct 12, 2026 at 10:25 AM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Oct 18, 2026 at 1:46 AM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

4. Oct 21, 2026 at 1:15 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.