The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel
before 3.0-rc1 does not ensure that the size of a chunk allocation is
a multiple of the block size, which allows local users to cause a
denial of service (BUG and system crash) by arranging for all resource
groups to have too little free space.
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MLIST:[oss-security] 20110713 CVE-2011-2689 kernel: gfs2: make sure fallocate bytes is a multiple of blksize
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