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bug#2370: 23.0.90; decode-coding-region make emacs crash
From: |
Kenichi Handa |
Subject: |
bug#2370: 23.0.90; decode-coding-region make emacs crash |
Date: |
Thu, 19 Feb 2009 12:56:42 +0900 |
In article <87d4dfqg5h.fsf@cyd.mit.edu>, Chong Yidong <cyd@stupidchicken.com>
writes:
> Kenichi Handa <handa@m17n.org> writes:
> > I found two bugs related to this problem, and just installed
> > a fix for one of them. Now the above specific problem
> > should be fixed. I'll keep on workning to fix the other bug
> > to make the decoding more robust.
> Thanks. I think decode_coding should also verify the size of the
> unprocessed bytes before writing them to coding->carrover. This way,
> future bugs of this sort will not cause memory corruption (which might
> be a security concern). What's your opinion?
Yes. I'm going to add such a check.
But it doesn't solve the underlying problem of handling too
long (and wrong) composition sequence in iso-2022 decoding.
Solving it requires a little bit more time.
---
Kenichi Handa
handa@m17n.org