ALAS2-2026-3275

Amazon Linux 2 Security Advisory: ALAS2-2026-3275
Advisory Released Date: 2026-04-30
Advisory Updated Date: 2026-04-30

Severity: Important

References: CVE-2026-28387 CVE-2026-28388 CVE-2026-28389 CVE-2026-28390
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

Potential use-after-free in DANE client code (CVE-2026-28387)

NULL Pointer Dereference When Processing a Delta CRL

NOTE: https://openssl-library.org/news/secadv/20260407.txt (CVE-2026-28388)

Possible NULL dereference when processing CMS KeyAgreeRecipientInfo (CVE-2026-28389)

Possible NULL dereference when processing CMS KeyTransportRecipientInfo (CVE-2026-28390)

Affected Packages:

edk2

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update edk2 or yum update --advisory ALAS2-2026-3275 to update your system.

New Packages:

aarch64:
    edk2-tools-20240813-307.amzn2.aarch64
    edk2-debuginfo-20240813-307.amzn2.aarch64

noarch:
    edk2-ovmf-20240813-307.amzn2.noarch
    edk2-tools-doc-20240813-307.amzn2.noarch
    edk2-aarch64-20240813-307.amzn2.noarch

src:
    edk2-20240813-307.amzn2.src

x86_64:
    edk2-tools-20240813-307.amzn2.x86_64
    edk2-debuginfo-20240813-307.amzn2.x86_64

Additional References

Release Notes: Amazon Linux 2 Release Notes

Red Hat: CVE-2026-28387, CVE-2026-28388, CVE-2026-28389, CVE-2026-28390

Mitre: CVE-2026-28387, CVE-2026-28388, CVE-2026-28389, CVE-2026-28390