Oracle Linux 8 administrators should apply two critical updates that address database connectivity risks and bootloader stability. The postgresql-jdbc security patch restricts SCRAM PBKDF2 iterations to prevent a denial of service vulnerability linked to CVE-2026-42198. Meanwhile the grub2 enhancement release fixes multiple DNS lookup errors, aligns Secure Boot certificate chains, and backports several upstream kernel configuration improvements. Both advisories provide updated packages for x86_64 and aarch64 systems to maintain enterprise server reliability.
ELSA-2026-25030 Important: Oracle Linux 8 postgresql-jdbc security update
ELBA-2026-22798 Oracle Linux 8 grub2 bug fix and enhancement update