Oracle Linux: CVE-2022-21499: ELSA-2022-9926: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
A flaw was found in the kernel/debug/debug_core.c in the Linux kernel in lockdown mode. This flaw allows an attacker with local access to trigger the debugger, bypass lockdown and write anonymously.