Structure ib_uverbs_qp_attr is copied to userland with allmost all fields uninitialized (140 bytes on x86). It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@xxxxxxxxx> --- Compile tested. drivers/infiniband/core/ucm.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c index 08f948d..ccfa4f9 100644 --- a/drivers/infiniband/core/ucm.c +++ b/drivers/infiniband/core/ucm.c @@ -622,7 +622,7 @@ static ssize_t ib_ucm_init_qp_attr(struct ib_ucm_file *file, if (IS_ERR(ctx)) return PTR_ERR(ctx); - resp.qp_attr_mask = 0; + memset(&resp, 0, sizeof(resp)); memset(&qp_attr, 0, sizeof qp_attr); qp_attr.qp_state = cmd.qp_state; result = ib_cm_init_qp_attr(ctx->cm_id, &qp_attr, &resp.qp_attr_mask); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
