Date: Thu, 2 Jun 2016 13:57:57 +0200 From: Adam Maris <amaris@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: CVE Request: bad USB host adapter implementation can corrupt memory/brick machine On 02/06/16 11:10, Marcus Meissner wrote: > Hi, > > reported here: > > https://marc.info/?l=linux-usb&m=146480770532266&w=2 > > issue is that the Frescologic device id 1009 host controller apparently > has a broken XHCI STREAMS implementation which would lead to memory corruptions > > Redhat might have already assigned a CVE. > > I am not sure if this is controllable for code execution, but at least USB devices can be used > to brick a machine with the kernel running (local denial of service)? > > Ciao, Marcus Red Hat hasn't assigned CVE. Overall, this has only minor security implications. Bricking machine doesn't seem to be easily reproducible, since on the second tested mobo it merely showed as a random memory corruption and hard locked system. It requires specific class of external usb devices getting plugged into machine with specific broken xhci controller. -- Adam Mariš, Red Hat Product Security 1CCD 3446 0529 81E3 86AF 2D4C 4869 76E7 BEF0 6BC2
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