Date: Thu, 17 Sep 2009 10:28:23 +0200 From: Marcus Meissner <meissner@...e.de> To: oss-security@...ts.openwall.com Cc: "Steven M. Christey" <coley@...us.mitre.org> Subject: Re: CVE request: kernel: perf_counter: Fix buffer overflow in perf_copy_attr() On Wed, Sep 16, 2009 at 09:32:26PM -0400, Steven M. Christey wrote: > > ====================================================== > Name: CVE-2009-3234 > Status: Candidate > URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3234 > Reference: MLIST:[linux-kernel] 20090916 [patch 15/45] perf_counter: Fix buffer overflow in perf_copy_attr() > Reference: URL:http://article.gmane.org/gmane.linux.kernel/890654 > Reference: MLIST:[oss-security] 20090916 CVE request: kernel: perf_counter: Fix buffer overflow in perf_copy_attr() > Reference: URL:http://www.openwall.com/lists/oss-security/2009/09/16/1 > Reference: BID:36423 > Reference: URL:http://www.securityfocus.com/bid/36423 > > Buffer overflow in the perf_copy_attr function in > kernel/perf_counter.c in the Linux kernel 2.6.31-rc1 allows local > users to cause a denial of service (crash) via a "big size data" to > the perf_counter_open system call. I think Brad Spengler has succeeded in exploiting this for code execution, see his twitter timeline from yesterday http://twitter.com/spendergrsec Ciao, Marcus
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