CVE-2026-74574

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74574

Key Details

CVE	CVE-2026-74574
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open()

The failed_dev_add and failed_dev_name paths drop the file-device

reference while wq->wq_lock is still held. If put_device(fdev) drops the

last reference, idxd_file_dev_release() runs synchronously and tries to

take wq->wq_lock again, deadlocking.

Those paths also fall through into the later ctx cleanup labels even

though idxd_file_dev_release() owns that cleanup and frees ctx. This can

make idxd_xa_pasid_remove(ctx) and kfree(ctx) operate on a freed context.

Move idxd_wq_get() before file-device setup can fail, since the release

callback always calls idxd_wq_put(). Then unlock wq->wq_lock before

put_device(fdev) and return directly from the file-device setup failure

path, leaving ctx cleanup to the release callback. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74574
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74574

Source

Reference

NVD

CVE