# ELSA-2021-0218: sudo security update

ELSA-2021-0218, released January 27, 2021, fixes 1 CVE in sudo (version 0:1.8.29-6.el8_3.1). One of them is being exploited (CVE-2021-3156); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-0218
- Platform: Linux
- Released: Jan 27, 2021
- Priority: Patch now (Closes CVE-2021-3156, exploited (CISA KEV))
- CVEs: 1, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-0218.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [sudo](https://patchblox.com/security/data/product/linux/sudo.md) | ol 8 | 0:1.8.29-6.el8_3.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-3156](https://patchblox.com/security/data/cve/CVE-2021-3156.md) | Patch now | sudo: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permi... | 7.8 | 0.9996 | CISA KEV |

---

Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.
