From 1c22e0295a5eb571c27b53c7371f95699ef705ff Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 17 Nov 2023 08:13:36 -0500 Subject: [PATCH] nvmet: nul-terminate the NQNs passed in the connect command The host and subsystem NQNs are passed in the connect command payload and interpreted as nul-terminated strings. Ensure they actually are nul-terminated before using them. Fixes: a07b4970f464 "nvmet: add a generic NVMe target") Reported-by: Alon Zahavi Reviewed-by: Chaitanya Kulkarni Signed-off-by: Christoph Hellwig Signed-off-by: Keith Busch --- drivers/nvme/target/fabrics-cmd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/nvme/target/fabrics-cmd.c b/drivers/nvme/target/fabrics-cmd.c index 43b5bd8bb6a5..d8da840a1c0e 100644 --- a/drivers/nvme/target/fabrics-cmd.c +++ b/drivers/nvme/target/fabrics-cmd.c @@ -244,6 +244,8 @@ static void nvmet_execute_admin_connect(struct nvmet_req *req) goto out; } + d->subsysnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; + d->hostnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; status = nvmet_alloc_ctrl(d->subsysnqn, d->hostnqn, req, le32_to_cpu(c->kato), &ctrl); if (status) @@ -313,6 +315,8 @@ static void nvmet_execute_io_connect(struct nvmet_req *req) goto out; } + d->subsysnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; + d->hostnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; ctrl = nvmet_ctrl_find_get(d->subsysnqn, d->hostnqn, le16_to_cpu(d->cntlid), req); if (!ctrl) { -- 2.25.1