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iscsi-target: fix extract_param to handle buffer length corner case

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extract_param() is called with max_length set to the total size of the
output buffer.  It's not safe to allow a parameter length equal to the
buffer size as the terminating null would be written one byte past the
end of the output buffer.

Signed-off-by: Eric Seppanen <eric@purestorage.com>
Cc: <stable@vger.kernel.org> #3.1+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Eric Seppanen 2013-11-20 14:19:51 -08:00 committed by Nicholas Bellinger
parent d1fa7a1d50
commit 369653e4fb
1 changed files with 1 additions and 1 deletions
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2
drivers/target/iscsi/iscsi_target_nego.c
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@ -88,7 +88,7 @@ int extract_param(
if (len < 0)
return -1;
if (len > max_length) {
if (len >= max_length) {
pr_err("Length of input: %d exceeds max_length:"
" %d\n", len, max_length);
return -1;