CVE-2026-103678 Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value

A flaw was found in tnef. An attacker can exploit this vulnerability by providing a specially crafted file containing uncompressed Rich Text Format RTF data. Because the application fails to properly validate input buffer boundaries before copying data in getrtfdatafrombuf, reading beyond the...