Summary
The corosync packages provide the Corosync Cluster Engine and C APIs for AlmaLinux cluster software.
Security Fix(es):
* corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly (CVE-2026-81665)
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.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | corosync | 3.1.10-1.el9_8.2 |
| AlmaLinux · 9 | corosync-vqsim | 3.1.10-1.el9_8.2 |
| AlmaLinux · 9 | corosynclib | 3.1.10-1.el9_8.2 |
| AlmaLinux · 9 | corosynclib-devel | 3.1.10-1.el9_8.2 |
Vulnerabilities 1
-
High 7.5
Corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly
A heap-based buffer overflow was found in Corosync's Totem Process Group (totempg) message reassembly. When processing fragmented multicast messages, the buffer used to reassemble fragments lacks a runtime bounds check in release builds. A network-adjacent at…