# ELSA-2023-2179: libguestfs-winsupport security update

ELSA-2023-2179, released May 15, 2023, fixes 5 CVEs in libguestfs-winsupport (version 0:9.2-1.el9). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2023-2179
- Platform: Linux
- Released: May 15, 2023
- Priority: High (Closes CVE-2021-46790, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2023-2179.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libguestfs-winsupport](https://patchblox.com/security/data/product/linux/libguestfs-winsupport.md) | ol 9 | 0:9.2-1.el9 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-46790](https://patchblox.com/security/data/cve/CVE-2021-46790.md) | High | hivex: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms | 7.8 | 0.0050 |  |
| [CVE-2022-30786](https://patchblox.com/security/data/cve/CVE-2022-30786.md) | High | hivex: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms | 7.8 | 0.0045 |  |
| [CVE-2022-30788](https://patchblox.com/security/data/cve/CVE-2022-30788.md) | High | libntfs-3g883: A crafted NTFS image can cause a heap-based buffer overflow in ntfs_mft_rec_alloc in NTFS-3G through 2021.8.22. | 7.8 | 0.0045 |  |
| [CVE-2022-30789](https://patchblox.com/security/data/cve/CVE-2022-30789.md) | High | libntfs-3g883: A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22. | 7.8 | 0.0045 |  |
| [CVE-2022-30784](https://patchblox.com/security/data/cve/CVE-2022-30784.md) | High | hivex: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms | 7.8 | 0.0041 |  |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo