# libvirt-doc-hwe 12.0.0-1ubuntu5.5: libvirt-doc-hwe 12.0.0-1ubuntu5.5 for Ubuntu 26.04.1 LTS (resolute)

libvirt-doc-hwe 12.0.0-1ubuntu5.5, released September 11, 2026, fixes 6 CVEs in libvirt-doc-hwe. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-resolute-libvirt-doc-hwe-12.0.0-1ubuntu5.5
- Platform: Linux
- Released: Sep 11, 2026
- Priority: High (Closes CVE-2026-18917, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libvirt-doc-hwe](https://patchblox.com/security/data/product/linux/libvirt-doc-hwe.md) | Ubuntu 26.04.1 LTS (resolute) | 12.0.0-1ubuntu5.5 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-18917](https://patchblox.com/security/data/cve/CVE-2026-18917.md) | High | Libvirt: integer overflow in nodegetfreepages rpc handler leading to heap buffer overflow | 7.8 | 0.0018 |  |
| [CVE-2026-63622](https://patchblox.com/security/data/cve/CVE-2026-63622.md) | High | libvirt: A flaw was found in libvirt | 7.8 | 0.0014 |  |
| [CVE-2026-61477](https://patchblox.com/security/data/cve/CVE-2026-61477.md) | Routine | Libvirt: libvirt: newline injection in network xml dns txt/srv fields allows dnsmasq config directive injection | 2.3 | 0.0016 |  |
| [CVE-2026-77159](https://patchblox.com/security/data/cve/CVE-2026-77159.md) | Routine | Libvirt: unsafe chown in qemutpmemulatorpreparehost() allows arbitrary file ownership change via symlink | 5.5 | 0.0016 |  |
| [CVE-2026-63623](https://patchblox.com/security/data/cve/CVE-2026-63623.md) | Routine | Libvirt: information disclosure via world-readable storage volume images during clone/convert | 5.5 | 0.0010 |  |
| [CVE-2026-61478](https://patchblox.com/security/data/cve/CVE-2026-61478.md) | Routine | libvirt vulnerability | n/a | n/a |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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