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Details of issue NIXPKGS-2026-0942

NIXPKGS-2026-0942
published 2 months, 3 weeks ago
Permalink CVE-2026-35091
8.2 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): Low (L)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): Low (L)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 2 months, 3 weeks ago by @LeSuisse Activity log
  • Created suggestion
  • @LeSuisse ignored package corosync-qdevice
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Corosync: corosync: denial of service and information disclosure via crafted udp packet

A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents. This vulnerability affects Corosync when running in totemudp/totemudpu mode, which is the default configuration.

Affected products

rhcos
corosync

Matching in nixpkgs

pkgs.corosync

Group Communication System with features for implementing high availability within applications

Ignored packages (1)

Package maintainers

No upstream fix (2026-04-02)

RH tracking issue: https://bugzilla.redhat.com/show_bug.cgi?id=2453169