oss-security - CVE request - kernel: GFS2: The setflags ioctl() doesn't check file ownership

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Message-ID: <4BFB5899.9080205@kernel.sg>
Date: Tue, 25 May 2010 12:56:57 +0800
From: Eugene Teo <eugeneteo@...nel.sg>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>
Subject: CVE request - kernel: GFS2: The setflags ioctl() doesn't check file
 ownership

Besides checking the write permissions, the setflags ioctl should also 
be checking for the ownership of the file. It's a minor issue but the 
behaviour is unexpected.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=595579
http://www.linux-archive.org/cluster-development/375481-gfs2-fix-permissions-checking-setflags-ioctl.html

Thanks, Eugene
-- 
main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); }

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