Date: Tue, 03 Nov 2009 18:54:05 +0800 From: Eugene Teo <eugene@...hat.com> To: oss-security@...ts.openwall.com CC: "Steven M. Christey" <coley@...us.mitre.org> Subject: CVE-2009-3547 kernel: fs: pipe.c null pointer dereference * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. http://lkml.org/lkml/2009/10/14/184 http://lkml.org/lkml/2009/10/21/42 http://git.kernel.org/linus/ad3960243e55320d74195fb85c975e0a8cc4466c https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-3547 Thanks, Eugene -- Eugene Teo / Red Hat Security Response Team
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