Date: Tue, 4 Jun 2013 10:59:33 -0700 From: Andi Kleen <ak@...ux.jf.intel.com> To: Marcus Meissner <meissner@...e.de> Cc: OSS Security List <oss-security@...ts.openwall.com>, a.p.zijlstra@...llo.nl, eranian@...gle.com, security@...nel.org Subject: Re: CVE Request: More perf security fixes > 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. -Andi
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