Date: Thu, 19 Nov 2020 19:51:04 +0100 From: Moritz Mühlenhoff <jmm@...til.org> To: oss-security@...ts.openwall.com Subject: Re: libass ass_outline.c signed integer overflow On Thu, Nov 19, 2020 at 11:54:07AM -0500, David A. Wheeler wrote: > >> In `ass_outline_construct`'s call to `outline_stroke` a signed integer > >> overflow happens *(undefined behaviour)*. On my machine signed overflow > >> happens to wrap around to a negative value, thus failing the assert. > >> https://github.com/libass/libass/issues/431 > >> > >> https://github.com/libass/libass/pull/432 > > > > I have followed the links above, and this seems to be an example of a > > situation where the CVE process has failed. It is still not fixed in > > Debian, possibly for that reason. I'll report a Debian bug today. > > I read through the issue discussion. As best as I can tell, no one filed for a CVE, so there was no CVE. > Did I misunderstand something? > > If my understanding is correct, that is *NOT* a failure of the CVE process. Yes, everything worked as designed here. This is CVE-2020-26682 Cheers, Moritz
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