Description
Heap buffer overflow in PostgreSQL pg_trgm allows a database user to achieve unknown impacts via a crafted input string. The attacker has limited control over the byte patterns to be written, but we have not ruled out the viability of attacks that lead to privilege escalation. PostgreSQL 18.1 and 18.0 are affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | PostgreSQL | 18 – < 18.2 | 18.2 |
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 | postgresql-18 | 18.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | postgresql-9.3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | postgresql18 +13 | 18.3-1.el10_2 | RHSA-2026:19009 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | postgresql18 | 18.3-1.2.hum1 | RHSA-2026:8756 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | postgresql18 +13 | 18.3-1.el10_2 | ALSA-2026:19009 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | postgresql18 | 18.3-1.el10 | RLSA-2026:19009 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | postgresql18 | 18.3-150600.13.8.1 | SUSE-SU-2026:0881-1 |
| SLES 15 SP6 | postgresql18 | 18.3-150600.13.8.1 | SUSE-SU-2026:0881-1 |
| SLES 15 SP5 | postgresql18 | 18.2-150200.5.6.1 | SUSE-SU-2026:0584-1 |
| SLES 15 SP4 | postgresql18 | 18.2-150200.5.6.1 | SUSE-SU-2026:0584-1 |
| SLES 12 SP5 | postgresql18 | 18.2-8.6.1 | SUSE-SU-2026:0585-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | postgresql18 | 18.3-160000.1.1 | SUSE-SU-2026:20921-1 |
| SLES for SAP 15 SP6 | postgresql18 | 18.3-150600.13.8.1 | SUSE-SU-2026:0881-1 |
| SLES for SAP 15 SP5 | postgresql18 | 18.2-150200.5.6.1 | SUSE-SU-2026:0584-1 |
| SLES for SAP 15 SP4 | postgresql18 | 18.2-150200.5.6.1 | SUSE-SU-2026:0584-1 |
| SLES 16.0 | postgresql18 | 18.3-160000.1.1 | SUSE-SU-2026:20921-1 |
| SLE HPC 15 SP5 | postgresql18 | 18.2-150200.5.6.1 | SUSE-SU-2026:0584-1 |
| SLE HPC 15 SP4 | postgresql18 | 18.2-150200.5.6.1 | SUSE-SU-2026:0584-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | postgresql18 | 18.2-1.1 | openSUSE-SU-2026:10197-1 |
| openSUSE Leap 16.0 | postgresql18 +1 | 18.3-160000.1.1 | openSUSE-SU-2026:20408-1 |
| openSUSE Leap 15.6 | postgresql18 | 18.3-150600.13.8.1 | SUSE-SU-2026:0881-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | postgresql16 | 16.12-r0 | — |
| Alpine v3.24 | postgresql17 | 17.8-r0 | — |
| Alpine v3.24 | postgresql18 | 18.2-r0 | — |
| Alpine v3.23 | postgresql16 | 16.12-r0 | — |
| Alpine v3.23 | postgresql17 | 17.8-r0 | — |
| Alpine v3.23 | postgresql18 | 18.2-r0 | — |
| Alpine v3.22 | postgresql15 | 15.16-r0 | — |
| Alpine v3.22 | postgresql16 | 16.12-r0 | — |
| Alpine v3.22 | postgresql17 | 17.8-r0 | — |
| Alpine v3.21 | postgresql15 | 15.17-r0 | — |
| Alpine v3.21 | postgresql16 | 16.12-r0 | — |
| Alpine v3.21 | postgresql17 | 17.8-r0 | — |
| Alpine v3.20 | postgresql15 | 15.16-r0 | — |
| Alpine v3.20 | postgresql16 | 16.12-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | postgresql18 +13 | 18.3-1.0.1.el10_2 | ELSA-2026-19009 |
Advisories 13
- WID-SEC-2026-2189 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:19009 Important: postgresql18 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-0409 PostgreSQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
- RHSA-2026:8756 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:19009 Red Hat Security Advisory: postgresql18 security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- ELSA-2026-19009 Important: postgresql18 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- RLSA-2026:19009 Important: postgresql18 security update Rocky Linux Security Advisories · May 29, 2026
- SUSE-SU-2026:20921-1 Security update for postgresql18 SUSE / openSUSE Security Updates · Apr 2, 2026
- openSUSE-SU-2026:20408-1 Security update for postgresql18 SUSE / openSUSE Security Updates · Mar 29, 2026
- openSUSE-SU-2026:10197-1 libecpg6-18.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0584-1 Security update for postgresql18 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0585-1 Security update for postgresql18 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0881-1 Security update for postgresql18 SUSE / openSUSE Security Updates · Mar 13, 2026