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cifs: writing past end of struct in cifs_convert_address()

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"s6->sin6_scope_id" is an int bits but strict_strtoul() writes a long
so this can corrupt memory on 64 bit systems.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Dan Carpenter 2012-03-01 10:06:52 +03:00 committed by Steve French
parent b2a3ad9ca5
commit 2545e0720a
1 changed files with 1 additions and 2 deletions
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3
fs/cifs/netmisc.c
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@ -197,8 +197,7 @@ cifs_convert_address(struct sockaddr *dst, const char *src, int len)
memcpy(scope_id, pct + 1, slen);
scope_id[slen] = '\0';
rc = strict_strtoul(scope_id, 0,
(unsigned long *)&s6->sin6_scope_id);
rc = kstrtouint(scope_id, 0, &s6->sin6_scope_id);
rc = (rc == 0) ? 1 : 0;
}