CVE-2026-21407 · Infrastructure
NO FIX YET
Some Intel Arc B-series graphics cards can deadlock inside the Ring 1 device driver code. A local user with a normal account can trigger the deadlock and cause a denial of service, but the sources report no confidentiality or integrity loss.
first public Nov 10, 2026 · 1 source
Could this affect your app?
Free first check from your website. Connect your repo for the full answer.
Machines with Intel Arc B-series graphics cards where a local, logged-in user can run software. The sources describe a local attack by an authenticated user with low complexity and no user interaction. Systems without these cards, or without local user access, are not described as exposed.
Not affected if no-arc-b-series-gpu, no-local-untrusted-users
Who cares arc-b-series, graphics-drivers, intel, linux, windows
lspci | grep -i arc on Linux or Device Manager on Windows).No fix yet, per the sources.
Deadlock for some Intel(R) Arc(TM) B-series graphics cards within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
This page as .md · .json · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Check it with your coding agent
It reads this page and tells you if your code is affected.
Are you affected?
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.