oss-security - Re: CVE request: kernel: splice local denial of service

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Date: Sat, 6 Jun 2009 13:43:33 -0400 (EDT)
From: "Steven M. Christey" <coley@...us.mitre.org>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request: kernel: splice local denial of
 service

======================================================
Name: CVE-2009-1961
Status: Candidate
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1961
Reference: MLIST:[oss-security] 20090529 CVE request: kernel: splice local denial of service
Reference: URL:http://www.openwall.com/lists/oss-security/2009/05/29/2
Reference: MLIST:[oss-security] 20090530 Re: CVE request: kernel: splice local denial of service
Reference: URL:http://www.openwall.com/lists/oss-security/2009/05/30/1
Reference: MLIST:[oss-security] 20090602 Re: CVE request: kernel: splice local denial of service
Reference: URL:http://www.openwall.com/lists/oss-security/2009/06/02/2
Reference: MLIST:[oss-security] 20090603 Re: CVE request: kernel: splice local denial of service
Reference: URL:http://www.openwall.com/lists/oss-security/2009/06/03/1
Reference: CONFIRM:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=7bfac9ecf0585962fe13584f5cf526d8c8e76f17
Reference: BID:35143
Reference: URL:http://www.securityfocus.com/bid/35143
Reference: SECTRACK:1022307
Reference: URL:http://securitytracker.com/id?1022307

The inode double locking code in fs/ocfs2/file.c in the Linux kernel
2.6.30 before 2.6.30-rc3, 2.6.27 before 2.6.27.24, 2.6.29 before 2.6.29.4,
and possibly other versions down to 2.6.19 allows local users to cause a
denial of service (prevention of file creation and removal) via a series
of splice system calls that trigger a deadlock between the
generic_file_splice_write, splice_from_pipe, and ocfs2_file_splice_write
functions.

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