This is a note to let you know that I've just added the patch titled
net: pktgen: fix null ptr deref in skb allocation
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-pktgen-fix-null-ptr-deref-in-skb-allocation.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Tue Jan 26 21:31:27 PST 2016
From: John Fastabend <john.fastabend@xxxxxxxxx>
Date: Sun, 10 Jan 2016 21:38:44 -0800
Subject: net: pktgen: fix null ptr deref in skb allocation
From: John Fastabend <john.fastabend@xxxxxxxxx>
[ Upstream commit 3de03596dfeee48bc803c1d1a6daf60a459929f3 ]
Fix possible null pointer dereference that may occur when calling
skb_reserve() on a null skb.
Fixes: 879c7220e82 ("net: pktgen: Observe needed_headroom of the device")
Signed-off-by: John Fastabend <john.r.fastabend@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/core/pktgen.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2787,7 +2787,9 @@ static struct sk_buff *pktgen_alloc_skb(
} else {
skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
}
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
+
+ if (likely(skb))
+ skb_reserve(skb, LL_RESERVED_SPACE(dev));
return skb;
}
Patches currently in stable-queue which might be from john.fastabend@xxxxxxxxx are
queue-4.4/net-pktgen-fix-null-ptr-deref-in-skb-allocation.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html