CVE-2026-93162 crypto: qat - cancel work on re-enable SR-IOV timeout
A use-after-free vulnerability in the Linux kernel QAT driver allows local attackers to cause a denial of service or potentially execute code via a timeout race condition.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93162?
CVE-2026-93162 is an use after free vulnerability in Linux, published on 17 Sep 2026. 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:
crypto: qat - cancel work on re-enable SR-IOV timeout
The QAT reset worker queues SR-IOV reenable work using a work_struct and completion embedded in an on-stack adf_sriov_dev_data. If the completion wait times out, the reset worker can return while device_sriov_wq still holds or executes the stack-backed work item.
Cancel the work on the device_sriov_wq on timeout before the stack frame unwinds.
Which versions are affected by CVE-2026-93162?
How do I fix CVE-2026-93162?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-93162 being exploited?
There is no known exploitation of CVE-2026-93162 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93162, DEBIAN-CVE-2026-93162, GHSA-q6p6-cfp2-cmw7, UBUNTU-CVE-2026-93162.