CVE-2024-27056 wifi: iwlwifi: mvm: ensure offloading TID queue exists
A missing check in the iwlwifi driver causes a kernel crash during resume if no packets were sent on TID 0, leading to denial of service.
- 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-2024-27056?
CVE-2024-27056 is a high-severity vulnerability in Linux kernel, published on 1 May 2024. 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:
wifi: iwlwifi: mvm: ensure offloading TID queue exists
The resume code path assumes that the TX queue for the offloading TID has been configured. At resume time it then tries to sync the write pointer as it may have been updated by the firmware.
In the unusual event that no packets have been send on TID 0, the queue will not have been allocated and this causes a crash. Fix this by ensuring the queue exist at suspend time.
Which versions are affected by CVE-2024-27056?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-27056?
Apply the vendor's patch.
Is CVE-2024-27056 being exploited?
There is no known exploitation of CVE-2024-27056 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-67493, BELL-CVE-2024-27056, DEBIAN-CVE-2024-27056, GHSA-f487-f23r-hjx6, ROOT-OS-DEBIAN-11-CVE-2024-27056, ROOT-OS-UBUNTU-2204-CVE-2024-27056 and 1 more.