On 06/19/2013 05:20 PM, Arnd Bergmann wrote: > On Friday 14 June 2013, James Bottomley wrote: >> This is the MMAP_PAGE_ZERO exploit. The original exploit relied on a >> leaky personality capability clearing mask and was fixed in 2.6.31 by >> >> commit f9fabcb58a6d26d6efde842d1703ac7cfa9427b6 >> Author: Julien Tinnes <jt@xxxxxxx> >> Date: Fri Jun 26 20:27:40 2009 +0200 >> >> personality: fix PER_CLEAR_ON_SETID >> >> So it's not really relevant to 3.x kernels, is it? > > Probably not. There is always a risk that something like this > can turn into an exploit, but it needs a combination with a couple > of other bugs. ok. Let me refresh this thread. We have middle solution where some functions have this checking and some not. Based on get_maintainer scripts Arnd should do that decision to accept or reject this patch. Arnd: Can you please decide if you want it or not? Based on that you can just add this one or we can create new one which remove BUG_ON(!ops) from that file. Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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