CLSA-2026-1776069613 Fix CVE(s): CVE-2026-3441, CVE-2026-3442

SECURITY UPDATE: buffer overflow in xcoff linker - debian/patches/CVE-2026-3441CVE-2026-3442.patch: properly bounds check XTYLD xscnlen index in xcofflinkaddsymbols - CVE-2026-3441 SECURITY UPDATE: out-of-bounds read in xcoff linker - debian/patches/CVE-2026-3441CVE-2026-3442.patch: sanity check...