(Apologies if this is a dupe, but I couldn't find any refernce to it.) There are two new holes in 2.6.11.9, fixed in 2.6.11.10, both covered by CAN-2005-1264 as far as I can tell. This is updated in vanilla-sources, but the rest of the kernels don't seem to have caught up.
This is probably fixed in gentoo-sources-2.6.11-r9, which should probably be marked stable as a result.
*** Bug 92934 has been marked as a duplicate of this bug. ***
Fixed in genpatches-2.6-11.12, which fixes the following kernels: gentoo-sources-2.6.11-r9 usermode-sources-2.6.11-r1 win4lin-sources-2.6.11 hardened-sources-2.6.11-r13
fixed in ck-sources-2.6.11_p8-r1
*** Bug 92553 has been marked as a duplicate of this bug. ***
All fixed, closing.