Dnsmasq: dnsmasq: denial of service due to out-of-bounds write in dhcp bootreply processing

• cbl2 dnsmasq 2.90-1 on CBL Mariner 2.0

Separate remediation guidance was not included in the collected bulletin.

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 8, 2026 at 9:05 AM UTC
   • Removed affected products: azl3 dnsmasq 2.90-1 on Azure Linux 3.0.

1. Apr 23, 2026 at 1:10 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Sep 27, 2026 at 11:11 PM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Oct 16, 2026 at 11:45 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.