Check for USAGE privilege on types used by stored expressions. This omission allowed roles without USAGE on a type to create stored expressions that depend on it, which could prevent the owner from changing the type later.
The checks deliberately live in the command paths rather than the dependency-recording routines. Those routines also run whenever the server re-derives an existing expression, and re-checking there would break routine maintenance for an owner who has since lost USAGE on a type its objects already reference. (Checking in the dependency-recording routines would also require additional CommandCounterIncrement() calls to avoid spurious errors.) The addition of a parameter to AlterDomainAddConstraint() breaks ABI compatibility, but we are unaware of any impacted third-party code. Reported-by: Noah Misch <[email protected]> Author: Nathan Bossart <[email protected]> Reviewed-by: Noah Misch <[email protected]> Reviewed-by: Tom Lane <[email protected]> Reviewed-by: Robert Haas <[email protected]> Security: CVE-2026-6470 Backpatch-through: 14 Branch ------ REL_19_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/424fb7160bc51d55c4be2023d9238f2db8807b35 Author: Nathan Bossart <[email protected]> Modified Files -------------- src/backend/catalog/dependency.c | 76 ++++++++++++++++++++++++++++++++ src/backend/catalog/heap.c | 22 +++++++++ src/backend/catalog/index.c | 3 ++ src/backend/catalog/pg_attrdef.c | 3 ++ src/backend/catalog/pg_constraint.c | 3 ++ src/backend/catalog/pg_proc.c | 6 +++ src/backend/catalog/pg_publication.c | 4 ++ src/backend/catalog/pg_type.c | 6 +++ src/backend/commands/indexcmds.c | 16 +++++++ src/backend/commands/policy.c | 8 ++++ src/backend/commands/propgraphcmds.c | 7 +++ src/backend/commands/statscmds.c | 5 +++ src/backend/commands/tablecmds.c | 19 +++++++- src/backend/commands/trigger.c | 5 +++ src/backend/commands/typecmds.c | 33 +++++++++++--- src/backend/parser/parse_utilcmd.c | 10 +++++ src/backend/rewrite/rewriteDefine.c | 2 + src/backend/tcop/utility.c | 3 +- src/include/catalog/dependency.h | 4 ++ src/include/commands/typecmds.h | 3 +- src/test/regress/expected/privileges.out | 46 +++++++++++++++++++ src/test/regress/sql/privileges.sql | 43 ++++++++++++++++++ 22 files changed, 318 insertions(+), 9 deletions(-)
