NULL Pointer Dereference When Processing a Delta CRL

• azl3 openssl 3.3.5-4 on Azure Linux 3.0

• cbl2 edk2 20230301gitf80f052277c8-47 on CBL-Mariner 2.0

• cbl2 hvloader 1.0.1-18 on CBL-Mariner 2.0

• cbl2 edk2 20230301gitf80f052277c8-47 on CBL Mariner 2.0

• cbl2 hvloader 1.0.1-18 on CBL Mariner 2.0

• cbl2 openssl 1.1.1k-39 on CBL Mariner 2.0

• azl3 nodejs24 24.13.0-3 on Azure Linux 3.0

• azl3 qemu 9.1.0-1 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 16, 2026 at 11:45 AM UTC
   • CVSS changed from 7.5 to 5.9.
   • Removed affected products: azl3 openvmm 0.2.0-1 on Azure Linux 3.0.
   • The vendor changed its remediation guidance.
2. Oct 12, 2026 at 10:25 AM UTC
   • CVSS changed from 5.9 to 7.5.
   • Added affected products: azl3 openvmm 0.2.0-1 on Azure Linux 3.0.
   • The vendor changed its remediation guidance.
3. Oct 11, 2026 at 10:05 AM UTC
   • The vendor changed the advisory's last-updated date.
4. Oct 8, 2026 at 9:05 AM UTC
   • Added affected products: cbl2 edk2 20230301gitf80f052277c8-47 on CBL-Mariner 2.0, cbl2 hvloader 1.0.1-18 on CBL-Mariner 2.0, cbl2 openssl 1.1.1k-39 on CBL-Mariner 2.0.
   • The vendor changed its remediation guidance.

1. Apr 9, 2026 at 1:02 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 1:46 AM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

4. Nov 10, 2026 at 2:00 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.