# ELSA-2021-5238: Security update for 7 packages

ELSA-2021-5238, released February 16, 2026, fixes 2 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-5238
- Platform: Linux
- Released: Feb 16, 2026
- Priority: Routine (Closes 2 CVEs, none high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-5238.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [ocaml-hivex](https://patchblox.com/security/data/product/linux/ocaml-hivex.md) | ol 8 | 0:1.3.18-21.module+el8.5.0+20365+3abb8f5b |
| [ocaml-hivex-devel](https://patchblox.com/security/data/product/linux/ocaml-hivex-devel.md) | ol 8 | 0:1.3.18-21.module+el8.5.0+20365+3abb8f5b |
| [ocaml-libguestfs](https://patchblox.com/security/data/product/linux/ocaml-libguestfs.md) | ol 8 | 1:1.40.2-28.0.1.module+el8.5.0+20363+3abb8f5b |
| [ocaml-libguestfs-devel](https://patchblox.com/security/data/product/linux/ocaml-libguestfs-devel.md) | ol 8 | 1:1.40.2-28.0.1.module+el8.5.0+20363+3abb8f5b |
| [ocaml-libnbd](https://patchblox.com/security/data/product/linux/ocaml-libnbd.md) | ol 8 | 0:1.2.2-1.module+el8.3.0+7860+a7792d29 |
| [ocaml-libnbd-devel](https://patchblox.com/security/data/product/linux/ocaml-libnbd-devel.md) | ol 8 | 0:1.2.2-1.module+el8.3.0+7860+a7792d29 |
| [qemu-kvm-tests](https://patchblox.com/security/data/product/linux/qemu-kvm-tests.md) | ol 8 | 15:4.2.0-59.module+el8.5.0+20460+2eddfbf5.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-20257](https://patchblox.com/security/data/cve/CVE-2021-20257.md) | Routine | libguestfs-bash-completion: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms | 6.5 | 0.0037 |  |
| [CVE-2021-3930](https://patchblox.com/security/data/cve/CVE-2021-3930.md) | Routine | qemu-kvm-block-gluster: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms | 6.5 | 0.0034 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo