An update for edk2 is now available for Red Hat Enterprise Linux 9.2 Extended
 Update Support.

Red Hat Product Security has rated this update as having a security impact of
 Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual
 Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. 

Security Fix(es):

* edk2: Buffer overflow when handling Server ID option from a DHCPv6 proxy
 Advertise message (CVE-2023-45235)

* edk2: Integer underflow when processing IA_NA/IA_TA options in a DHCPv6
 Advertise message (CVE-2023-45229)

* edk2: Out of Bounds read when handling a ND Redirect message with truncated
 options (CVE-2023-45231)

* edk2: Predictable TCP Initial Sequence Numbers (CVE-2023-45236)

* edk2: Use of a Weak PseudoRandom Number Generator (CVE-2023-45237)

For more details about the security issue(s), including the impact, a CVSS
 score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2023-45229: Loop with Unreachable Exit Condition ('Infinite Loop')
 (CWE-835)
CVE-2023-45231: Out-of-bounds Read (CWE-125)
CVE-2023-45235: Improper Restriction of Operations within the Bounds of a
 Memory Buffer (CWE-119)
CVE-2023-45236: Exposure of Sensitive Information to an Unauthorized Actor
 (CWE-200)
CVE-2023-45237: Use of Cryptographically Weak Pseudo-Random Number Generator
 (PRNG) (CWE-338)