# DLA-4308-1: corosync security update

DLA-4308-1, released September 22, 2025, fixes 1 CVE in corosync (version 3.1.2-2+deb11u1). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dla-4308-1
- Platform: Linux
- Released: Sep 22, 2025
- Priority: High (Closes CVE-2025-30472, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2025-30472

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [corosync](https://patchblox.com/security/data/product/linux/corosync.md) | Debian 11.6 (bullseye) | 3.1.2-2+deb11u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-30472](https://patchblox.com/security/data/cve/CVE-2025-30472.md) | High | libsam4: Corosync through 3.1.9, if encryption is disabled or the attacker knows the encryption key, has a stack-based buffer... | 9.8 | 0.0047 |  |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo