# ELSA-2021-3576: Security update for 7 packages

ELSA-2021-3576, released September 23, 2021, fixes 2 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-3576
- Platform: Linux
- Released: Sep 23, 2021
- Priority: High (Closes CVE-2021-36222, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-3576.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [krb5-devel](https://patchblox.com/security/data/product/linux/krb5-devel.md) | ol 8 | 0:1.18.2-8.3.el8_4 |
| [krb5-libs](https://patchblox.com/security/data/product/linux/krb5-libs.md) | ol 8 | 0:1.18.2-8.3.el8_4 |
| [krb5-pkinit](https://patchblox.com/security/data/product/linux/krb5-pkinit.md) | ol 8 | 0:1.18.2-8.3.el8_4 |
| [krb5-server](https://patchblox.com/security/data/product/linux/krb5-server.md) | ol 8 | 0:1.18.2-8.3.el8_4 |
| [krb5-server-ldap](https://patchblox.com/security/data/product/linux/krb5-server-ldap.md) | ol 8 | 0:1.18.2-8.3.el8_4 |
| [krb5-workstation](https://patchblox.com/security/data/product/linux/krb5-workstation.md) | ol 8 | 0:1.18.2-8.3.el8_4 |
| [libkadm5](https://patchblox.com/security/data/product/linux/libkadm5.md) | ol 8 | 0:1.18.2-8.3.el8_4 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-36222](https://patchblox.com/security/data/cve/CVE-2021-36222.md) | High | krb5-devel: Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecu... | 7.5 | 0.1051 |  |
| [CVE-2021-37750](https://patchblox.com/security/data/cve/CVE-2021-37750.md) | Routine | krb5-devel: Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecu... | 6.5 | 0.0251 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo