The do_splice_from function in fs/splice.c in the Linux kernel before
2.6.27 does not reject file descriptors that have the O_APPEND flag
set, which allows local users to bypass append mode and make arbitrary
changes to other locations in the file.
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MLIST:[oss-security] 20081013 CVE request: kernel: don't allow splice() to files opened with O_APPEND
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