# DSA-5368-1: libreswan security update

DSA-5368-1, released March 3, 2023, fixes 1 CVE in libreswan (version 4.3-1+deb11u3). None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dsa-5368-1
- Platform: Linux
- Released: Mar 3, 2023
- Priority: Routine (Closes CVE-2023-23009)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2023-23009

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libreswan](https://patchblox.com/security/data/product/linux/libreswan.md) | Debian 11.6 (bullseye) | 4.3-1+deb11u3 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-23009](https://patchblox.com/security/data/cve/CVE-2023-23009.md) | Routine | libreswan: Libreswan is an implementation of IPsec and IKE for Linux | 6.5 | 0.0161 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo