I was eagerly awating the release of linux-2.6_2.6.32-48squeeze4 because it would fix #701744 (fallout from XSA-39: Linux netback DoS via malicious guest ring)
It turns out I should have read the bug report more closely. #701744 was only about the xen-netback side of things. I haven't been able to find a debian bug about the REAL bug - the xen-netfront gso overflow. Upstream have patched this: http://git.kernel.org/linus/9ecd1a75d977e2e8c48139c7d3efed183f898d94 "netfront: reduce gso_max_size to account for max TCP header" Is this likely to go into a squeeze kernel? The xen environment I'm running these squeeze VM's in is running on CentOS dom0's and Redhat have closed the visible bugs I can find on this as "Not a bug" :(
