RHSA-2026:20916 - Security Advisory

标题

An update for corosync is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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

The corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster software.

Security Fix(es):

• corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)
• corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

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 High Availability for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux High Availability for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le

修复

• BZ - 2453813 - CVE-2026-35091 corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet
• BZ - 2453814 - CVE-2026-35092 corosync: Corosync: Denial of Service via integer overflow in join message validation

CVE

• CVE-2026-35091
• CVE-2026-35092

参考

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