[HarfBuzz] OOB access possibility in old harfbuzz
behdad at behdad.org
Wed Sep 7 21:43:43 PDT 2011
The patch looks good. Pushed to master.
On 09/08/11 00:11, Kenichi Ishibashi wrote:
> We found that there is an opportunity of out-of-bound read access in old harfbuzz.
> src/harfbuzz-tibetan.c contains tibetanForm table. It looks the table is
> supposed to be referenced in the character range U+0F40-U+0FC0, but
> tibetan_nextSyllableBoundary() could refer the table with characters whose
> codepoint is out of the range (e.g. U+0F21). Since OOB access could be a
> security issue, we'd like to fix the problem.
> Attached a workaround to avoid this problem. I'd appreciate if you could take
> a look at it.
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> HarfBuzz at lists.freedesktop.org
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