# CVE-2019-3817: createrepo_c: Yum is a command-line utility that allows the user to check for updates and automatically download and install update...

CVE-2019-3817 is fixed in 24 products on 1 platform, first by RHSA-2019:3583, released November 5, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-3817
- Priority: High
- CVSS: 8.8 (Moderate)
- EPSS: 0.0172
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 5, 2019

## Description

Yum is a command-line utility that allows the user to check for updates and automatically download and install updated RPM packages. Yum automatically obtains and downloads dependencies, prompting the user for permission as necessary.   The following packages have been upgraded to a later upstream version: dnf (4.2.7), dnf-plugins-core (4.0.8), libcomps (0.1.11), libdnf (0.35.1), librepo (1.10.3), libsolv (0.7.4). (BZ#1690288, BZ#1690289, BZ#1690299, BZ#1692402, BZ#1694019, BZ#1697946)  Security Fix(es):  * libcomps: use after free when merging two objmrtrees (CVE-2019-3817)  * libsolv: illegal address access in pool_whatprovides in src/pool.h (CVE-2018-20534)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | createrepo_c RHEL 8 | 0:0.11.0-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | createrepo_c ol 8 | 0:0.11.0-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | createrepo_c-devel RHEL 8 | 0:0.11.0-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | createrepo_c-devel ol 8 | 0:0.11.0-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | createrepo_c-libs RHEL 8 | 0:0.11.0-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | createrepo_c-libs ol 8 | 0:0.11.0-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | dnf RHEL 8 | 0:4.2.7-6.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | dnf ol 8 | 0:4.2.7-6.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | dnf-automatic RHEL 8 | 0:4.2.7-6.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | dnf-automatic ol 8 | 0:4.2.7-6.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | dnf-data RHEL 8 | 0:4.2.7-6.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | dnf-data ol 8 | 0:4.2.7-6.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | dnf-plugins-core RHEL 8 | 0:4.0.8-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | dnf-plugins-core ol 8 | 0:4.0.8-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | libcomps RHEL 8 | 0:0.1.11-2.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | libcomps ol 8 | 0:0.1.11-2.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | libcomps-devel RHEL 8 | 0:0.1.11-2.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | libcomps-devel ol 8 | 0:0.1.11-2.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | libdnf RHEL 8 | 0:0.35.1-8.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | libdnf ol 8 | 0:0.35.1-8.0.1.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | librepo RHEL 8 | 0:1.10.3-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | librepo ol 8 | 0:1.10.3-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | librhsm RHEL 8 | 0:0.0.3-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | librhsm ol 8 | 0:0.0.3-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | libsolv RHEL 8 | 0:0.7.4-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | libsolv ol 8 | 0:0.7.4-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | microdnf RHEL 8 | 0:3.0.1-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | microdnf ol 8 | 0:3.0.1-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-createrepo_c RHEL 8 | 0:0.11.0-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-createrepo_c ol 8 | 0:0.11.0-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-dnf RHEL 8 | 0:4.2.7-6.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-dnf ol 8 | 0:4.2.7-6.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-dnf-plugin-versionlock RHEL 8 | 0:4.0.8-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-dnf-plugin-versionlock ol 8 | 0:4.0.8-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-dnf-plugins-core RHEL 8 | 0:4.0.8-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-dnf-plugins-core ol 8 | 0:4.0.8-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-hawkey RHEL 8 | 0:0.35.1-8.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-hawkey ol 8 | 0:0.35.1-8.0.1.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-libcomps RHEL 8 | 0:0.1.11-2.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-libcomps ol 8 | 0:0.1.11-2.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-libdnf RHEL 8 | 0:0.35.1-8.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-libdnf ol 8 | 0:0.35.1-8.0.1.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | python3-librepo RHEL 8 | 0:1.10.3-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | python3-librepo ol 8 | 0:1.10.3-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | yum RHEL 8 | 0:4.2.7-6.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | yum ol 8 | 0:4.2.7-6.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |
| Linux | yum-utils RHEL 8 | 0:4.0.8-3.el8 | [RHSA-2019:3583](https://patchblox.com/security/data/fix/linux/rhsa-2019-3583.md) | Nov 5, 2019 |
| Linux | yum-utils ol 8 | 0:4.0.8-3.el8 | [ELSA-2019-3583](https://patchblox.com/security/data/fix/linux/elsa-2019-3583.md) | Nov 14, 2019 |

---

Data as of 2026-11-08T00:53:09Z 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.