CVE-2026-39956 jq: Missing runtime type checks for _strindices lead to crash and limited memory disclosure

jq is a command-line JSON processor. In commits after 69785bf77f86e2ea1b4a20ca86775916889e91c9, the strindices builtin in jq's src/builtin.c passes its arguments directly to jvstringindexes without verifying they are strings, and jvstringindexes in src/jv.c relies solely on assert checks that are...