CVE-2026-31441 dmaengine: idxd: Fix memory leak when a wq is reset

What is CVE-2026-31441?

CVE-2026-31441 is a medium-severity denial of service vulnerability in Linux kernel, published on 22 Apr 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:

dmaengine: idxd: Fix memory leak when a wq is reset

idxd_wq_disable_cleanup() which is called from the reset path for a workqueue, sets the wq type to NONE, which for other parts of the driver mean that the wq is empty (all its resources were released).

Only set the wq type to NONE after its resources are released.

Weakness: CWE-401

Which versions are affected by CVE-2026-31441?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-31441?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-31441 being exploited?

There is no known exploitation of CVE-2026-31441 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-83261, BELL-CVE-2026-31441, DEBIAN-CVE-2026-31441, GHSA-46fr-3c87-qq5v, ROOT-OS-DEBIAN-11-CVE-2026-31441, ROOT-OS-DEBIAN-12-CVE-2026-31441 and 4 more.