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_17_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/d1c8aa0b09f18bba1343ce2e4aa537a17a8a972f Author: Nathan Bossart <[email protected]> Modified Files -------------- src/backend/catalog/dependency.c | 81 ++++++++++++++++++++++++++++++++ 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/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 +++++++++++++++++ 21 files changed, 316 insertions(+), 9 deletions(-)
