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Ben Hutchings authored
commit 894c6350 from the 3.2-stable branch. We need to check the position and size of file writes against various limits, using generic_write_check(). This was not being done for the splice write path. It was fixed upstream by commit 8d020765 ("->splice_write() via ->write_iter()") but we can't apply that. CVE-2014-7822 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> [Ben fixed it in 3.2 stable, i ported it to 3.10 stable] Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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