RHSA-2026:22111 - Security Advisory

标题

An update for ovn25.09 is now available for Fast Datapath for Red Hat Enterprise Linux 10.

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.

描述

OVN, the Open Virtual Network, is a system to support virtual network abstraction. OVN complements the existing capabilities of OVS to add native support for virtual network abstractions, such as virtual L2 and L3 overlays and security groups.

Security Fix(es):

• ovn: ovn: Heap Over-Read in ICMP Error Response Generation - security issue (CVE-2026-5265)
• ovn: OVN: Information disclosure via crafted DHCPv6 packets (CVE-2026-5367)

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.

解决方案

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

受影响的产品

• Red Hat Enterprise Linux Fast Datapath 10 x86_64
• Red Hat Enterprise Linux Fast Datapath (for RHEL Server for IBM Power LE) 10 ppc64le
• Red Hat Enterprise Linux Fast Datapath (for IBM z Systems) 10 s390x
• Red Hat Enterprise Linux Fast Datapath (for RHEL for ARM 64) 10 aarch64

修复

• BZ - 2453458 - CVE-2026-5265 ovn: ovn: Heap Over-Read in ICMP Error Response Generation - security issue
• BZ - 2455863 - CVE-2026-5367 ovn: OVN: Information disclosure via crafted DHCPv6 packets
• FDP-3260 - CLONE [ovn25.09 fast-datapath-rhel-10] - Upstream: error log in ovn-northd.log when set port security for vrrp
• FDP-3261 - CLONE [ovn25.09 fast-datapath-rhel-10] - Upstream: northd: wrong ip address temporarily assigned by ipam
• FDP-3486 - CLONE [ovn25.09 fast-datapath-rhel-10] - Upstream: Add dash version suffix to the internal version string
• FDP-3502 - CLONE [ovn25.09 fast-datapath-rhel-10] - Upstream: Add dash version suffix to the internal version string
• FDP-3539 - CLONE [ovn25.09 fast-datapath-rhel-10] - Upstream: [BGP][EVPN] Learned routes with indirect nexthop are ignored by ovn-northd
• FDP-3603 - CLONE [ovn25.09 fast-datapath-rhel-10] - Upstream: CR-LRP port flips flops after BFD failover due to unexpected chassis failure
• FDP-3699 - OVN 25.09 FDP-OVN-26.n4 RHEL 10 Release

CVE

• CVE-2026-5265
• CVE-2026-5367

参考

• https://access.redhat.com/security/updates/classification/#important