Messages in this thread Patch in this message | | | Date | Tue, 22 Feb 2011 14:17:36 -0800 | From | Greg KH <> | Subject | [57/70] cifs: fix handling of scopeid in cifs_convert_address |
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2.6.37-stable review patch. If anyone has any objections, please let us know.
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From: Jeff Layton <jlayton@redhat.com>
commit 9616125611ee47693186533d76e403856a36b3c8 upstream.
The code finds, the '%' sign in an ipv6 address and copies that to a buffer allocated on the stack. It then ignores that buffer, and passes 'pct' to simple_strtoul(), which doesn't work right because we're comparing 'endp' against a completely different string.
Fix it by passing the correct pointer. While we're at it, this is a good candidate for conversion to strict_strtoul as well.
Cc: David Howells <dhowells@redhat.com> Reported-by: Björn JACKE <bj@sernet.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/cifs/netmisc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -170,7 +170,7 @@ cifs_convert_address(struct sockaddr *ds { int rc, alen, slen; const char *pct; - char *endp, scope_id[13]; + char scope_id[13]; struct sockaddr_in *s4 = (struct sockaddr_in *) dst; struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) dst; @@ -197,9 +197,9 @@ cifs_convert_address(struct sockaddr *ds memcpy(scope_id, pct + 1, slen); scope_id[slen] = '\0'; - s6->sin6_scope_id = (u32) simple_strtoul(pct, &endp, 0); - if (endp != scope_id + slen) - return 0; + rc = strict_strtoul(scope_id, 0, + (unsigned long *)&s6->sin6_scope_id); + rc = (rc == 0) ? 1 : 0; } return rc;
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