Hi, Marcelo.
Marcelo Tosatti <[email protected]> writes:
> > diff -u linux-2.4.31.orig/fs/nfs/nfs2xdr.c linux-2.4.31/fs/nfs/nfs2xdr.c
> > --- linux-2.4.31.orig/fs/nfs/nfs2xdr.c 2002-11-28 18:53:15.000000000 -0500
> > +++ linux-2.4.31/fs/nfs/nfs2xdr.c 2005-09-12 16:12:30.000000000 -0400
> > @@ -571,8 +571,8 @@
> > strlen = (u32*)kmap(rcvbuf->pages[0]);
> > /* Convert length of symlink */
> > len = ntohl(*strlen);
> > - if (len > rcvbuf->page_len)
> > - len = rcvbuf->page_len;
> > + if (len > rcvbuf->page_len - sizeof(*strlen) - 1)
> > + len = rcvbuf->page_len - sizeof(*strlen) - 1;
>
> So the problem is that the "len" variable encapsulated in (u32 *)rcvbuf->pages[0]
> does not account for its own length (4 bytes)?
That's one problem.
> If thats the reason, you don't need the "-1" there?
It also writes a 0 byte. I think it looks like this:
---- ------------ -
len string... 0
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |