CVE-2026-35092 · cross-distro fix matrix

CVE-2026-35092: A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifi

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2026-35092 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

corosync→ fixed in3.1.2-2+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y corosync
```

Debian bookworm

Source: Debian Security Tracker

corosync→ fixed in3.1.7-1+deb12u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y corosync
```

Debian trixie

Source: Debian Security Tracker

corosync→ fixed in3.1.9-2+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y corosync
```

Are YOU affected by CVE-2026-35092?

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