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Date: Fri, 24 Sep 2010 09:31:47 -0700 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Dan Carpenter <error27@...il.com>, "David S. Miller" <davem@...emloft.net> Subject: [23/68] net/llc: make opt unsigned in llc_ui_setsockopt() 2.6.32-stable review patch. If anyone has any objections, please let us know. ------------------ From: Dan Carpenter <error27@...il.com> commit 339db11b219f36cf7da61b390992d95bb6b7ba2e upstream. The members of struct llc_sock are unsigned so if we pass a negative value for "opt" it can cause a sign bug. Also it can cause an integer overflow when we multiply "opt * HZ". Signed-off-by: Dan Carpenter <error27@...il.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- net/llc/af_llc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -977,7 +977,8 @@ static int llc_ui_setsockopt(struct sock { struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); - int rc = -EINVAL, opt; + unsigned int opt; + int rc = -EINVAL; lock_sock(sk); if (unlikely(level != SOL_LLC || optlen != sizeof(int))) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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