CLSA-2026-1780391238 Fix CVE(s): CVE-2026-8376

SECURITY UPDATE: heap buffer overflow in the regexp compiler 32-bit - debian/patches/CVE-2026-8376.patch: guard against an SSizet overflow when sizing the joined fixed-substring buffer in Perlstudychunk in regcomp.c; backported from upstream commit 5e7f119eb2bb1181be908701f22bf7068e722f1c. -...