https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 21 Oct 2026 03:14:31 +0000 https://db.gcve.eu/vuln/fkie_cve-2026-91189 <p>The GUIX binary resource loader never checks that a font page&#39;s glyph range is well formed. `gx_page_header_first_glyph` and `gx_page_header_last_glyph` are read verbatim from the file and only the upper bound of `last_glyph` is validated, so a page declaring `first_glyph &gt; last_glyph` makes `last - first + 1` underflow to a very large unsigned count.</p> <p>That count is multiplied by a glyph record size to reserve the load buffer, and the multiply is unchecked, so it wraps to a small value and the loader allocates a buffer far smaller than the data it is about to write. The load pass then recomputes the count in a narrower type and writes attacker-controlled glyph records into the undersized buffer.</p> <p>The GUIX binary resource loader never checks that a font page&#39;s glyph range is well formed. `gx_page_header_first_glyph` and `gx_page_header_last_glyph` are read verbatim from the file and only the upper bound of `last_glyph` is validated, so a page declaring `first_glyph &gt; last_glyph` makes `last - first + 1` underflow to a very large unsigned count.</p> <p>That count is multiplied by a glyph record size to reserve the load buffer, and the multiply is unchecked, so it wraps to a small value and the loader allocates a buffer far smaller than the data it is about to write. The load pass then recomputes the count in a narrower type and writes attacker-controlled glyph records into the undersized buffer.</p> https://db.gcve.eu/vuln/fkie_cve-2026-91189