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gigaset: correct range checking off by one error

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Correct a potential array overrun due to an off by one error in the
range check on the CAPI CONNECT_REQ CIPValue parameter.
Found and reported by Dan Carpenter using smatch.

Impact: bugfix
Signed-off-by: Tilman Schmidt <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Tilman Schmidt 2010-03-16 07:04:01 +00:00 • committed by David S. Miller
commit 6ad34145cf
1 changed files with 1 additions and 1 deletions
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2
drivers/isdn/gigaset/capi.c
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@ -1301,7 +1301,7 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
}
/* check parameter: CIP Value */
if (cmsg->CIPValue > ARRAY_SIZE(cip2bchlc) ||
if (cmsg->CIPValue >= ARRAY_SIZE(cip2bchlc) ||
(cmsg->CIPValue > 0 && cip2bchlc[cmsg->CIPValue].bc == NULL)) {
dev_notice(cs->dev, "%s: unknown CIP value %d\n",
"CONNECT_REQ", cmsg->CIPValue);