CVE-2022-50044 net: qrtr: start MHI channel after endpoit creation
A race condition in the Linux kernel QRTR driver can cause a kernel panic if an MHI channel event occurs before endpoint creation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50044?
CVE-2022-50044 is a medium-severity vulnerability in Linux kernel, published on 18 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: start MHI channel after endpoit creation
MHI channel may generates event/interrupt right after enabling. It may leads to 2 race conditions issues.
1) Such event may be dropped by qcom_mhi_qrtr_dl_callback() at check:
if (!qdev || mhi_res->transaction_status) return;
Because dev_set_drvdata(&mhi_dev->dev, qdev) may be not performed at this moment. In this situation qrtr-ns will be unable to enumerate services in device. ---------------------------------------------------------------
2) Such event may come at the moment after dev_set_drvdata() and before qrtr_endpoint_register(). In this case kernel will panic with accessing wrong pointer at qcom_mhi_qrtr_dl_callback():
rc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr, mhi_res->bytes_xferd);
Because endpoint is not created yet. -------------------------------------------------------------- So move mhi_prepare_for_transfer_autoqueue after endpoint creation to fix it.
Weakness: CWE-362
Which versions are affected by CVE-2022-50044?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50044?
Apply the vendor's patch.
Is CVE-2022-50044 being exploited?
There is no known exploitation of CVE-2022-50044 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50044, GHSA-4655-978p-cp8q, UBUNTU-CVE-2022-50044.