# lxd 3.0.3-0ubuntu1~18.04.2+esm3: lxd 3.0.3-0ubuntu1~18.04.2+esm3 for Ubuntu 18.04.6 LTS (bionic)

lxd 3.0.3-0ubuntu1~18.04.2+esm3, released May 21, 2026, fixes 4 CVEs in lxd. 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/ubuntu-bionic-lxd-3.0.3-0ubuntu1-18.04.2-esm3
- Platform: Linux
- Released: May 21, 2026
- Priority: High (Closes CVE-2026-42508, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [lxd](https://patchblox.com/security/data/product/linux/lxd.md) | Ubuntu 18.04.6 LTS (bionic) | 3.0.3-0ubuntu1~18.04.2+esm3 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-42508](https://patchblox.com/security/data/cve/CVE-2026-42508.md) | High | Invoking  auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts | 9.1 | 0.0691 |  |
| [CVE-2026-39830](https://patchblox.com/security/data/cve/CVE-2026-39830.md) | High | Invoking  client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh | 9.1 | 0.0068 |  |
| [CVE-2026-39834](https://patchblox.com/security/data/cve/CVE-2026-39834.md) | High | Invoking  infinite loop on large channel writes in golang.org/x/crypto/ssh | 9.1 | 0.0060 |  |
| [CVE-2026-39833](https://patchblox.com/security/data/cve/CVE-2026-39833.md) | High | Invoking  key constraints not enforced in golang.org/x/crypto/ssh/agent | 9.1 | 0.0047 |  |

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Data as of 2026-11-12T19:57:06Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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