[Linux-kernel-mentees] [PATCH] infiniband: Prevent uninit-value in ucma_accept()
From: Peilin Ye <hidden>
Date: 2020-07-25 22:07:53
Also in:
linux-rdma, lkml
Subsystem:
infiniband subsystem, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
ucma_accept() is reading uninitialized memory when `in_len` is less than `offsetof(struct rdma_ucm_accept, ece)`. Fix it. Signed-off-by: Peilin Ye <redacted> --- drivers/infiniband/core/ucma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index a591fdccdce0..842d297903c0 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c@@ -1134,7 +1134,7 @@ static ssize_t ucma_listen(struct ucma_file *file, const char __user *inbuf, static ssize_t ucma_accept(struct ucma_file *file, const char __user *inbuf, int in_len, int out_len) { - struct rdma_ucm_accept cmd; + struct rdma_ucm_accept cmd = {}; struct rdma_conn_param conn_param; struct rdma_ucm_ece ece = {}; struct ucma_context *ctx;
--
2.25.1
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