Description
libmaxminddb before 1.4.3 has a heap-based buffer over-read in dump_entry_data_list in maxminddb.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libmaxminddb | 1.4.3-1 | — |
| Debian 13 | libmaxminddb | 1.4.3-1 | — |
| Debian 12 | libmaxminddb | 1.4.3-1 | — |
| Debian 9 | libmaxminddb | 1.2.0-1+deb9u1 | DLA-2445-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libmaxminddb | 1.4.2-0ubuntu1.20.04.1 | USN-4631-1 |
| Ubuntu 18.04 LTS | libmaxminddb | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libmaxminddb | 1.0.4-2.1ubuntu0.1~esm1 | USN-5751-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | libmaxminddb +1 | 1.2.0-10.el8_9.1 | RHSA-2024:0768 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.8 EUS | libmaxminddb +1 | 1.2.0-10.el8_8.1 | RHSA-2024:0750 |
| RHEL 8.6 EUS | libmaxminddb +1 | 1.2.0-10.el8_6.1 | RHSA-2024:0751 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | libmaxminddb +1 | 1.2.0-10.el8_9.1 | ALSA-2024:0768 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libmaxminddb | 1.2.0-10.el8_9.1 | RLSA-2024:0768 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.23 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.22 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.21 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.20 | libmaxminddb | 1.4.3-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.18 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.17 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.16 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.15 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.14 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.13 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.12 | libmaxminddb | 1.4.3-r0 | — |
| Alpine v3.11 | libmaxminddb | 1.4.2-r2 | — |
| Alpine v3.10 | libmaxminddb | 1.3.2-r1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | libmaxminddb +1 | 1.2.0-10.el8_9.1 | ELSA-2024-0768 |
Advisories 11
- ALSA-2024:0768 Moderate: libmaxminddb security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:0751 Red Hat Security Advisory: libmaxminddb security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2024:0768 Red Hat Security Advisory: libmaxminddb security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2024:0750 Red Hat Security Advisory: libmaxminddb security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-5751-1 libmaxminddb vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-4631-1 libmaxminddb vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-2445-1 libmaxminddb - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:0768 Moderate: libmaxminddb security update Rocky Linux Security Advisories · Feb 5, 2026
- WID-SEC-2024-0521 IBM MQ: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 15, 2024
- WID-SEC-2024-0333 Red Hat Enterprise Linux (libmaxminddb): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Apr 11, 2024
- ELSA-2024-0768 Moderate: libmaxminddb security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 12, 2024
References
- https://github.com/maxmind/libmaxminddb/issues/236
- https://github.com/maxmind/libmaxminddb/pull/237
- https://github.com/maxmind/libmaxminddb/compare/1.4.2...1.4.3
- [debian-lts-announce] 20201110 [SECURITY] [DLA 2445-1] libmaxminddb security update mailing-list
- GLSA-202011-15 vendor-advisory
- FEDORA-2020-1fb1785fa1 vendor-advisory
- FEDORA-2020-8a8f8b244f vendor-advisory