# CVE-2020-28241: libmaxminddb0: libmaxminddb before 1.4.3 has a heap-based buffer over-read indump_entry_data_list in maxminddb.c.

CVE-2020-28241 is fixed in 4 products on 1 platform, first by libmaxminddb0 1.4.2-0ubuntu1.20.04.1, released November 5, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-28241
- Priority: Routine
- CVSS: 6.5 (Medium)
- EPSS: 0.0216
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 5, 2020

## Description

libmaxminddb before 1.4.3 has a heap-based buffer over-read indump_entry_data_list in maxminddb.c.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libmaxminddb RHEL 8 | 0:1.2.0-10.el8_9.1 | [RHSA-2024:0768](https://patchblox.com/security/data/fix/linux/rhsa-2024-0768.md) | Feb 12, 2024 |
| Linux | libmaxminddb almalinux 8 | 1.2.0-10.el8_9.1 | [ALSA-2024:0768](https://patchblox.com/security/data/fix/linux/alsa-2024-0768.md) | Feb 12, 2024 |
| Linux | libmaxminddb ol 8 | 0:1.2.0-10.el8_9.1 | [ELSA-2024-0768](https://patchblox.com/security/data/fix/linux/elsa-2024-0768.md) | Feb 12, 2024 |
| Linux | libmaxminddb rocky 8 | 0:1.2.0-10.el8_9.1 | [RLSA-2024:0768](https://patchblox.com/security/data/fix/linux/rlsa-2024-0768.md) | Mar 12, 2024 |
| Linux | libmaxminddb-devel RHEL 8 | 0:1.2.0-10.el8_9.1 | [RHSA-2024:0768](https://patchblox.com/security/data/fix/linux/rhsa-2024-0768.md) | Feb 12, 2024 |
| Linux | libmaxminddb-devel almalinux 8 | 1.2.0-10.el8_9.1 | [ALSA-2024:0768](https://patchblox.com/security/data/fix/linux/alsa-2024-0768.md) | Feb 12, 2024 |
| Linux | libmaxminddb-devel ol 8 | 0:1.2.0-10.el8_9.1 | [ELSA-2024-0768](https://patchblox.com/security/data/fix/linux/elsa-2024-0768.md) | Feb 12, 2024 |
| Linux | libmaxminddb0 Ubuntu 20.04 LTS (focal) | 1.4.2-0ubuntu1.20.04.1 | [libmaxminddb0 1.4.2-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmaxminddb0-1.4.2-0ubuntu1.20.04.1.md) | Nov 5, 2020 |
| Linux | libmaxminddb0 Ubuntu 24.10 (oracular) | 1.4.2-0ubuntu2 | [libmaxminddb0 1.4.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libmaxminddb0-1.4.2-0ubuntu2.md) | Jan 16, 2026 |
| Linux | libmaxminddb0 Ubuntu 25.04 (plucky) | 1.4.2-0ubuntu2 | [libmaxminddb0 1.4.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libmaxminddb0-1.4.2-0ubuntu2.md) | Jan 16, 2026 |
| Linux | mmdb-bin Ubuntu 20.04 LTS (focal) | 1.4.2-0ubuntu1.20.04.1 | [mmdb-bin 1.4.2-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mmdb-bin-1.4.2-0ubuntu1.20.04.1.md) | Nov 5, 2020 |
| Linux | mmdb-bin Ubuntu 24.10 (oracular) | 1.4.2-0ubuntu2 | [mmdb-bin 1.4.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mmdb-bin-1.4.2-0ubuntu2.md) | Jan 16, 2026 |
| Linux | mmdb-bin Ubuntu 25.04 (plucky) | 1.4.2-0ubuntu2 | [mmdb-bin 1.4.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-mmdb-bin-1.4.2-0ubuntu2.md) | Jan 16, 2026 |

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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

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