linux-kernel - [PATCH] gainfar.c : skb_over

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 24 Jun 2010 12:53:23 +0300
From:	Eran Liberty <liberty@...ricom.com>
To:	David Miller <davem@...emloft.net>
CC:	LKML <linux-kernel@...r.kernel.org>, galak@...nel.crashing.org
Subject: [PATCH] gainfar.c : skb_over_panic (kernel-2.6.32.15)

Fix possible skb_over_panic event in Freescale's "gianfar" driver. 

The skb_over_panic occurs due to calling skb_put() within 
gfar_clean_rx_ring(). This happens if (and only if) shortly prior to the 
event and a few lined above the skb_put(), an skb was queued back to the 
priv->rx_recycle queue due to RXBD_LAST or RXBD_ERR status.
The skb is queued without properly re-setting its state.

The patch properly reset the skb state.

I have tested this patch on MPC8548 based product and asserted it avoided the skb_over_panic event.

Signed-off-by: Eran Liberty <liberty@...ricom.com>

---

View attachment "gianfar_skb_over_panic.patch" of type "text/x-diff" (611 bytes)