Fix integer overflow in array_agg(), when the array grows too large If you accumulate many arrays full of NULLs, you could overflow 'nitems', before reaching the MaxAllocSize limit on the allocations. Add an explicit check that the number of items doesn't grow too large. With more than MaxArraySize items, getting the final result with makeArrayResultArr() would fail anyway, so better to error out early.
Reported-by: Xint Code Author: Heikki Linnakangas <[email protected]> Reviewed-by: Tom Lane <[email protected]> Backpatch-through: 14 Security: CVE-2026-6473 Branch ------ REL_17_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/3c41f5534aa60402293e7a50c4e44f7d6b6e3e4d Author: Heikki Linnakangas <[email protected]> Modified Files -------------- src/backend/utils/adt/arrayfuncs.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
