Date: Wed, 5 Jun 2013 10:23:02 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Andi Kleen <ak@...ux.jf.intel.com> Cc: Marcus Meissner <meissner@...e.de>, OSS Security List <oss-security@...ts.openwall.com>, eranian@...gle.com, security@...nel.org Subject: Re: CVE Request: More perf security fixes On Tue, Jun 04, 2013 at 10:59:33AM -0700, Andi Kleen wrote: > > 3. Information leak (??) via perf LBR filter > > Leak + crash actually. > > > > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e15eb3ba6c0249c9e8c783517d131b47db995ca > > > > commit 6e15eb3ba6c0249c9e8c783517d131b47db995ca > > Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> > > Date: Fri May 3 14:11:24 2013 +0200 > > > > perf/x86/intel/lbr: Fix LBR filter > > > > The LBR 'from' adddress is under full userspace control; ensure > > we validate it before reading from it. > > This patch is known broken and causes additional crashes. > There's no updated patch for that so far. And yet there's no crash report in my inbox.. how kind you you andi. And I know you don't agree with the patch, but since you're too lazy to provide a better one I didn't think you minded _that_ much :-)
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