ALAS2-2026-3304

Amazon Linux 2 Security Advisory: ALAS2-2026-3304
Advisory Released Date: 2026-05-26
Advisory Updated Date: 2026-05-26
Severity: Medium
Issue Overview:

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. (CVE-2026-6766)

Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6767)

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (CVE-2026-6772)


Affected Packages:

nss


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 nss or yum update --advisory ALAS2-2026-3304 to update your system.

New Packages:
aarch64:
    nss-3.90.0-2.amzn2.0.3.aarch64
    nss-tools-3.90.0-2.amzn2.0.3.aarch64
    nss-sysinit-3.90.0-2.amzn2.0.3.aarch64
    nss-devel-3.90.0-2.amzn2.0.3.aarch64
    nss-pkcs11-devel-3.90.0-2.amzn2.0.3.aarch64
    nss-debuginfo-3.90.0-2.amzn2.0.3.aarch64

i686:
    nss-3.90.0-2.amzn2.0.3.i686
    nss-tools-3.90.0-2.amzn2.0.3.i686
    nss-sysinit-3.90.0-2.amzn2.0.3.i686
    nss-devel-3.90.0-2.amzn2.0.3.i686
    nss-pkcs11-devel-3.90.0-2.amzn2.0.3.i686
    nss-debuginfo-3.90.0-2.amzn2.0.3.i686

src:
    nss-3.90.0-2.amzn2.0.3.src

x86_64:
    nss-3.90.0-2.amzn2.0.3.x86_64
    nss-tools-3.90.0-2.amzn2.0.3.x86_64
    nss-sysinit-3.90.0-2.amzn2.0.3.x86_64
    nss-devel-3.90.0-2.amzn2.0.3.x86_64
    nss-pkcs11-devel-3.90.0-2.amzn2.0.3.x86_64
    nss-debuginfo-3.90.0-2.amzn2.0.3.x86_64

Additional References

Release Notes:  Amazon Linux 2 Release Notes

Red Hat: CVE-2026-6766, CVE-2026-6767, CVE-2026-6772

Mitre: CVE-2026-6766, CVE-2026-6767, CVE-2026-6772