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b43legacy: fix possible buffer overrun in debugfs

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Fix possible buffer overrun.

The patch to b43 by Michael Buesch <mb@bu3sch.de> has been ported to
b43legacy.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stefano Brivio 2007-11-06 22:48:36 +01:00 committed by Jeff Garzik
parent 35c7e6602b
commit 187a9dca3f
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/b43legacy/debugfs.c
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@ -124,7 +124,7 @@ static ssize_t shm_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufs
__le16 *le16buf = (__le16 *)buf;
for (i = 0; i < 0x1000; i++) {
if (bufsize <= 0)
if (bufsize < sizeof(tmp))
break;
tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2 * i);
le16buf[i] = cpu_to_le16(tmp);