| Package | Affected versions | Patched versions |
|---|---|---|
| postgresql | ≥ 15.0, < 15.18≥ 16.0, < 16.14≥ 17.0, < 17.10≥ 18.0, < 18.4< 14.23 | 15.1816.1417.1018.414.23 |
Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets(), PQfn(..., result_is_int=0, ...) stores arbitrary-length, server-determined data into a buffer of unspecified size. Because both the \lo_export command in psql and pg_dump call lo_read(), the server superuser can overwrite pg_dump or psql stack memory. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
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