Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 037/118] RDS: null pointer dereference in rds_atomic_free_op | Date | Mon, 15 Jan 2018 13:34:24 +0100 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Mohamed Ghannam <simo.ghannam@gmail.com>
[ 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@gmail.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/rds/rdma.c | 1 + 1 file changed, 1 insertion(+)
--- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -877,6 +877,7 @@ 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;
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