This is a note to let you know that I've just added the patch titled
RDS: null pointer dereference in rds_atomic_free_op
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:
rds-null-pointer-dereference-in-rds_atomic_free_op.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 Sat Jan 13 14:28:20 CET 2018
From: Mohamed Ghannam <simo.ghannam@xxxxxxxxx>
Date: Wed, 3 Jan 2018 21:06:06 +0000
Subject: RDS: null pointer dereference in rds_atomic_free_op
From: Mohamed Ghannam <simo.ghannam@xxxxxxxxx>
[ Upstream commit 7d11f77f84b27cef452cee332f4e469503084737 ]
set rm->atomic.op_active to 0 when rds_pin_pages() fails
or the user supplied address is invalid,
this prevents a NULL pointer usage in rds_atomic_free_op()
Signed-off-by: Mohamed Ghannam <simo.ghannam@xxxxxxxxx>
Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/rds/rdma.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -869,6 +869,7 @@ int rds_cmsg_atomic(struct rds_sock *rs,
err:
if (page)
put_page(page);
+ rm->atomic.op_active = 0;
kfree(rm->atomic.op_notifier);
return ret;
Patches currently in stable-queue which might be from simo.ghannam@xxxxxxxxx are
queue-4.4/rds-null-pointer-dereference-in-rds_atomic_free_op.patch
queue-4.4/rds-heap-oob-write-in-rds_message_alloc_sgs.patch