Commit 0928d680 authored Jun 25, 2006 by Jan Engelhardt Committed by Linus Torvalds Jun 25, 2006

[PATCH] openpromfs: fix missing NUL



tchars is not '\0'-terminated so the strtoul may run into problems.  Fix that.
 Also make tchars as big as a long in hexadecimal form would take rather than
just 16.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 2e611390

fs/openpromfs/inode.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -448,10 +448,11 @@ static ssize_t property_write(struct file filp, const char __user buf,
		*q \|= simple_strtoul (tmp, NULL, 16);
		buf += last_cnt;
		} else {
		char tchars[17]; /* XXX yuck... */
		char tchars[2 * sizeof(long) + 1];

		if (copy_from_user(tchars, buf, 16))
		if (copy_from_user(tchars, buf, sizeof(tchars) - 1))
		return -EFAULT;
		tchars[sizeof(tchars) - 1] = '\0';
		*q = simple_strtoul (tchars, NULL, 16);
		buf += 9;
		}