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b43: debugfs SHM read buffer overrun fix

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Fix possible buffer overrun.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2007-11-02 18:35:02 +01:00 committed by Jeff Garzik
parent 80fda03fc8
commit 30c4ae4231
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/b43/debugfs.c
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@ -128,7 +128,7 @@ static ssize_t shm_read_file(struct b43_wldev *dev,
__le16 *le16buf = (__le16 *)buf;
for (i = 0; i < 0x1000; i++) {
if (bufsize <= 0)
if (bufsize < sizeof(tmp))
break;
tmp = b43_shm_read16(dev, B43_SHM_SHARED, 2 * i);
le16buf[i] = cpu_to_le16(tmp);