CVE-2026-21407: Intel Arc B-series graphics device driver deadlock denial of service

CVE-2026-21407 · Severity: info · Published 2026-11-10

Intel Arc B-series graphics cards can experience a deadlock condition in their device drivers that causes system availability to be impacted. An authenticated local attacker can trigger a denial of service with low complexity, potentially freezing or halting graphics operations without requiring user interaction.

Technologies: Intel Arc B-series graphics cards, Intel Graphics Driver for 7th-10th Gen Core processors, Intel Graphics Driver for Arc graphics, Intel Graphics Driver for Arc Pro graphics, Intel Graphics Driver for Data Center GPU Flex Series. Vendors: Intel.

Quick answers

Is CVE-2026-21407 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-21407 being exploited in the wild.
How severe is CVE-2026-21407?
Informational severity, published 10 November 2026.
Which products and versions are affected?
Intel Arc B-series graphics cards B570, B580; Intel Graphics Driver for 7th-10th Gen Core processors before 31.0.101.2141; Intel Graphics Driver for Arc graphics before 32.0.101.8629; Intel Graphics Driver for Arc Pro graphics before 32.0.101.8517; and 2 more.
Is there a fix for CVE-2026-21407?
Yes: fixed in Graphics Driver for Arc graphics 32.0.101.8629 or later; Arc Pro graphics 32.0.101.8517 or later; Data Center GPU Flex Series 32.0.101.8331 or later; 7th-10th Gen Core processors 31.0.101.2141 or later; Atom, Pentium, Celeron processors 31.0.101.2141 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-21407 attacked?
It is attacked with local access.
Am I affected by CVE-2026-21407?
Check whether you run Intel Arc B-series graphics cards, Intel Graphics Driver for 7th-10th Gen Core processors, Intel Graphics Driver for Arc graphics or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: Graphics Driver for Arc graphics 32.0.101.8629 or later; Arc Pro graphics 32.0.101.8517 or later; Data Center GPU Flex Series 32.0.101.8331 or later; 7th-10th Gen Core processors 31.0.101.2141 or later; Atom, Pentium, Celeron processors 31.0.101.2141 or later

Technical details

A deadlock vulnerability exists in the Ring 1 device driver for Intel Arc B-series graphics cards (B570, B580). An authenticated local attacker with low attack complexity can trigger the deadlock condition via local access, resulting in denial of service and high availability impact on the vulnerable system. Intel has released driver updates to address this issue.

Affected products

  • Intel Arc B-series graphics cards B570, B580
  • Intel Graphics Driver for Arc graphics before 32.0.101.8629
  • Intel Graphics Driver for Arc Pro graphics before 32.0.101.8517
  • Intel Graphics Driver for Data Center GPU Flex Series before 32.0.101.8331
  • Intel Graphics Driver for 7th-10th Gen Core processors before 31.0.101.2141
  • Intel Graphics Driver for Atom, Pentium, Celeron processors before 31.0.101.2141

Timeline

  • 2026-11-10: disclosed

References

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