Integer Overflow or Wraparound Affecting corosync/corosync package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Apr 2026
- disclosed1 Apr 2026
- creditUnknown
Introduced: 1 Apr 2026
CVE-2026-35092 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the memb_join_sanity() function. An attacker can cause the service to crash by sending specially crafted UDP packets to the affected service. This is only exploitable if the deployment is configured to use totemudp or totemudpu mode.
Workaround
This vulnerability can be mitigated by restricting network access to the cluster communication ports and configuring firewall rules to limit incoming UDP traffic to only trusted hosts within the cluster.