CVE-2024-41079
Daniel Wagner (1): nvmet: always initialize cqe.result
drivers/nvme/target/core.c | 1 + drivers/nvme/target/fabrics-cmd-auth.c | 3 --- drivers/nvme/target/fabrics-cmd.c | 6 ------ 3 files changed, 1 insertion(+), 9 deletions(-)
From: Daniel Wagner dwagner@suse.de
The spec doesn't mandate that the first two double words (aka results) for the command queue entry need to be set to 0 when they are not used (not specified). Though, the target implemention returns 0 for TCP and FC but not for RDMA.
Let's make RDMA behave the same and thus explicitly initializing the result field. This prevents leaking any data from the stack.
Signed-off-by: Daniel Wagner dwagner@suse.de Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Yuntao Liu liuyuntao12@huawei.com --- drivers/nvme/target/core.c | 1 + drivers/nvme/target/fabrics-cmd-auth.c | 3 --- drivers/nvme/target/fabrics-cmd.c | 6 ------ 3 files changed, 1 insertion(+), 9 deletions(-)
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 3935165048e7..97bbf4e7a9bb 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -933,6 +933,7 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq, req->metadata_sg_cnt = 0; req->transfer_len = 0; req->metadata_len = 0; + req->cqe->result.u64 = 0; req->cqe->status = 0; req->cqe->sq_head = 0; req->ns = NULL; diff --git a/drivers/nvme/target/fabrics-cmd-auth.c b/drivers/nvme/target/fabrics-cmd-auth.c index 1d9854484e2e..c103eba96350 100644 --- a/drivers/nvme/target/fabrics-cmd-auth.c +++ b/drivers/nvme/target/fabrics-cmd-auth.c @@ -332,7 +332,6 @@ void nvmet_execute_auth_send(struct nvmet_req *req) pr_debug("%s: ctrl %d qid %d nvme status %x error loc %d\n", __func__, ctrl->cntlid, req->sq->qid, status, req->error_loc); - req->cqe->result.u64 = 0; if (req->sq->dhchap_step != NVME_AUTH_DHCHAP_MESSAGE_SUCCESS2 && req->sq->dhchap_step != NVME_AUTH_DHCHAP_MESSAGE_FAILURE2) { unsigned long auth_expire_secs = ctrl->kato ? ctrl->kato : 120; @@ -515,8 +514,6 @@ void nvmet_execute_auth_receive(struct nvmet_req *req) status = nvmet_copy_to_sgl(req, 0, d, al); kfree(d); done: - req->cqe->result.u64 = 0; - if (req->sq->dhchap_step == NVME_AUTH_DHCHAP_MESSAGE_SUCCESS2) nvmet_auth_sq_free(req->sq); else if (req->sq->dhchap_step == NVME_AUTH_DHCHAP_MESSAGE_FAILURE1) { diff --git a/drivers/nvme/target/fabrics-cmd.c b/drivers/nvme/target/fabrics-cmd.c index d8da840a1c0e..fa9e8dc92153 100644 --- a/drivers/nvme/target/fabrics-cmd.c +++ b/drivers/nvme/target/fabrics-cmd.c @@ -225,9 +225,6 @@ static void nvmet_execute_admin_connect(struct nvmet_req *req) if (status) goto out;
- /* zero out initial completion result, assign values as needed */ - req->cqe->result.u32 = 0; - if (c->recfmt != 0) { pr_warn("invalid connect version (%d).\n", le16_to_cpu(c->recfmt)); @@ -305,9 +302,6 @@ static void nvmet_execute_io_connect(struct nvmet_req *req) if (status) goto out;
- /* zero out initial completion result, assign values as needed */ - req->cqe->result.u32 = 0; - if (c->recfmt != 0) { pr_warn("invalid connect version (%d).\n", le16_to_cpu(c->recfmt));
反馈: 您发送到kernel@openeuler.org的补丁/补丁集,转换为PR失败! 邮件列表地址:https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/5... 失败原因:应用补丁/补丁集失败,Patch failed at 0001 nvmet: always initialize cqe.result 建议解决方法:请查看失败原因, 确认补丁是否可以应用在当前期望分支的最新代码上
FeedBack: The patch(es) which you have sent to kernel@openeuler.org has been converted to PR failed! Mailing list address: https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/5... Failed Reason: apply patch(es) failed, Patch failed at 0001 nvmet: always initialize cqe.result Suggest Solution: please checkout if the failed patch(es) can work on the newest codes in expected branch