Description
psqlODBC sizes its row cache from the column count of a cursor's first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PostgreSQL | psqlODBC | < 18.00.0006 | 18.00.0006 |
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 | psqlodbc | 1:18.00.0006-1 | — |
| Debian 13 | psqlodbc | No fix yet | — |
| Debian 12 | psqlodbc | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | psqlodbc | No fix yet | — |
| Ubuntu 26.04 LTS | psqlodbc | No fix yet | — |
| Ubuntu 24.04 LTS | psqlodbc | No fix yet | — |
| Ubuntu 22.04 LTS | psqlodbc | No fix yet | — |
| Ubuntu 20.04 LTS | psqlodbc | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | psqlodbc | No fix yet | — |
| Ubuntu 16.04 LTS | psqlodbc | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | psqlODBC | 18.00.0006-150600.3.5.1 | SUSE-SU-2026:5191-1 |
| SLES 15 SP6 | psqlODBC | 18.00.0006-150600.3.5.1 | SUSE-SU-2026:5191-1 |
| SLES 12 SP5 | psqlODBC | 18.00.0006-1.8.1 | SUSE-SU-2026:5192-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | psqlODBC | 18.00.0006-150600.3.5.1 | SUSE-SU-2026:5191-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | psqlODBC | 18.00.0006-1.1 | openSUSE-SU-2026:12472-1 |
| openSUSE Leap 16.0 | psqlODBC | 18.00.0006-bp160.1.1 | openSUSE-SU-2026:22261-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | postgresql-odbc +1 | 18.00.0006-1.amzn2023.0.1 | ALAS2023-2026-3427 |
Advisories 5
- ALAS2023-2026-3427 Important: postgresql-odbc security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 12, 2026
- SUSE-SU-2026:5192-1 Security update for psqlODBC SUSE / openSUSE Security Updates · Nov 12, 2026
- SUSE-SU-2026:5191-1 Security update for psqlODBC SUSE / openSUSE Security Updates · Nov 12, 2026
- openSUSE-SU-2026:22261-1 Security update for psqlODBC SUSE / openSUSE Security Updates · Nov 11, 2026
- openSUSE-SU-2026:12472-1 psqlODBC-18.00.0006-1.1 on GA media SUSE / openSUSE Security Updates · Nov 7, 2026