Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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 attacker able to send crafted multicast protocol messages to the cluster could cause a heap buffer overflow with attacker-controlled data. This can crash the Corosync daemon, causing a denial of service to the entire cluster, and may potentially allow further exploitation given sufficient heap-corruption control.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
A severe vulnerability was disclosed for Red Hat Enterprise Linux and OpenShift Container Platform (CVE-2026-81665) https://vuldb.com/vuln/398718
Post summary
The text announces a severe vulnerability (CVE-2026-81665) affecting Red Hat Enterprise Linux and OpenShift Container Platform, providing a link to a vulnerability database entry but no further technical or exploitation details.
CVE-2026-81665 A heap-based buffer overflow was found in Corosync's Totem Process Group (totempg) message reassembly. When processing fragmented multicast messages, the buffer used … https://www.cve.org/CVERecord?id=CVE-2026-81665
Post summary
The post discloses a new heap-based buffer overflow vulnerability (CVE-2026-81665) in Corosync's totempg component, providing technical details but no PoC, exploit, mitigation, or evidence of active exploitation.