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Date: Tue, 18 Jan 2011 14:43:02 -0500
From: Dan Rosenberg <>
Subject: CVE request: heap corruption in libpango

>From Launchpad [1]:

"When used with FreeType2 as a backend, Pango is vulnerable to heap
corruption when rendering malformed fonts. The vulnerability occurs in
pango_ft2_font_render_box_glyph() in pango/pangoft2-render.c. A buffer
is malloc'd with size box->bitmap.rows * box->bitmap.pitch.
Subsequently, 0xff is written at offsets into this buffer without
checking that these offsets fall within the buffer's boundaries,
leading to heap corruption."



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