oss-sec mailing list archives

Re: CVE Request: xorg-server and pixman


From: Kurt Seifried <kseifried () redhat com>
Date: Tue, 03 Dec 2013 21:32:33 -0700

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On 12/03/2013 10:54 AM, Jamie Strandboge wrote:

Hi,

This bug has been public since August but I could find a CVE for
it: https://launchpad.net/bugs/1197921

There are two bugs - Xorg can be made to crash and pixman can
trigger the aformentioned Xorg crash. A simplified reproducer is in
the pixman patches with another reproducer in the Launchpad bug.
The xorg

xorg-server - exa: only draw valid trapezoids The patch was
submitted in October but doesn't seem to be applied yet, so I'm 
CC'ing xorg_security. Patch references the pixman f.d.o bug, but
doesn't seem to have an associated xorg bug. 
http://patchwork.freedesktop.org/patch/14769/ 
http://lists.x.org/archives/xorg-devel/2013-October/037996.html

Pixman - Corrupted CustomShape crashes Xorg 
https://bugs.freedesktop.org/show_bug.cgi?id=67484 Patch: -
5e14da97f16e421d084a9e735be21b1025150f0c (fix) -
2f876cf86718d3dd9b3b04ae9552530edafe58a1 (test case)

Thanks!


So only x.org crashes, you can trigger it via X.org, or via pixman? or
is pixman also crashing?

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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