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CVE-2026-71394 is an improper input validation flaw in GNU Emacs for Android through version 30.2 in the TrueType/OpenType font parsing code in src/sfnt.c, specifically sfnt_read_table_directory(). The vulnerability is caused by use of an incorrect comparison variable in the read-length check for the font table directory. A crafted font file can declare more table directory entries than are actually present in the underlying data, and the parser may still return a table-directory structure whose entry array contains uninitialized heap memory. Subsequent font-processing logic may then consume these uninitialized table directory entries during later table lookups. The resulting behavior can include disclosure of heap-resident data, process instability, and on 32-bit targets potentially arbitrary memory access.
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Cross-references every affected SKU, including bundled OEM variants.
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