Import upstream patches to fix CVE-2025-57632
- Import upstream patches to fix CVE-2025-57632 (Closes: #1116446)
- When processing SMB2 chained PDUs (NextCommand), libsmb2 repeatedly calls smb2_add_iovector() to append to a fixed-size iovec array without checking the upper bound of v->niov (SMB2_MAX_VECTORS=256)
- d/control: Mark libsmb2-6 and libsmb2-dev as Multi-Arch: same
- d/patches:
- CVE-2025-57632-pt1.patch: New patch
- CVE-2025-57632-pt2.patch: Backport and Refresh patch
- CVE-2025-57632-pt3.patch: Backport and Refresh patch
- CVE-2025-57632-pt4.patch: Backport and Refresh patch
- d/watch: Update to version 5