Bug#916278: qemu - CVE-2018-19665: bt subsystem mishandles negative length variables

2019-01-25 Thread Hugo Lefeuvre
> Anyways, given that the patch is quite large (though straightforward), that > the subsystem doesn't seem to be very actively maintained and that the user > base is quite small, it is maybe better to mark this no-dsa in stretch and > jessie. ... but if we manage to trim down upstream's patch to

Bug#916278: qemu - CVE-2018-19665: bt subsystem mishandles negative length variables

2019-01-12 Thread Hugo Lefeuvre
Hi, I had a look at CVE-2018-19665 regarding qemu in oldstable/stable. summary: the bluetooth subsystem uses signed length variables at multiple places. These length variables are used, among others, in memcpy calls. A malicious guest VM could attempt to crash the host by passing negative len