Date: Tue, 30 Nov 2010 10:50:11 -0500 (EST) From: Josh Bressers <bressers@...hat.com> To: oss-security@...ts.openwall.com Cc: "Steven M. Christey" <coley@...us.mitre.org> Subject: Re: CVE request: kernel: pipe_fcntl local DoS Please use CVE-2010-4256 Thanks. -- JB ----- "Eugene Teo" <eugene@...hat.com> wrote: > "Export 'get_pipe_info()' to other users > > And in particular, use it in 'pipe_fcntl()'. > > The other pipe functions do not need to use the 'careful' version, > since > they are only ever called for things that are already known to be > pipes. > > The normal read/write/ioctl functions are called through the file > operations structures, so if a file isn't a pipe, they'd never get > called. But pipe_fcntl() is special, and called directly from the > generic fcntl code, and needs to use the same careful function that > the > splice code is using." > > In other words, this is a pipe_fcntl local DoS. > > http://git.kernel.org/linus/71993e62a47dabddf10302807d6aa260455503f4 > http://git.kernel.org/linus/c66fb347946ebdd5b10908866ecc9fa05ee2cf3d > > Introduced in v2.6.35-rc1 > > Thanks, Eugene
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