CVE-2026-31656: drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat

Q: What is the severity of CVE-2026-31656?

CVE-2026-31656 is classified as a high-severity vulnerability affecting the Linux kernel's i915 DRM driver.

Q: How do I fix CVE-2026-31656?

To fix CVE-2026-31656, update the Linux kernel to the latest version that includes the patch for this vulnerability.

Q: What types of systems are affected by CVE-2026-31656?

CVE-2026-31656 affects systems running the Linux kernel with the i915 DRM driver.

Q: What are the potential impacts of CVE-2026-31656?

The potential impacts of CVE-2026-31656 include system crashes or exploitation leading to unauthorized access.

Q: Is there a known exploit for CVE-2026-31656?

As of now, there are no publicly known exploits specifically targeting CVE-2026-31656.

Published Apr 24, 2026

Updated

drm/i915/gt: fix refcount underflow in intelengineparkheartbeat

Affected Software

18 affected componentsFixes available

Linux Linux kernel (i915 DRM driver)

Microsoft azl3 kernel 6.6.134.1-2

Patch available

Microsoft azl3 kernel 6.6.134.1-2<6.6.137.1-1

6.6.137.1-1

Linux Linux kernel>=5.5.1<5.15.203

Linux Linux kernel>=5.16<6.1.169

Linux Linux kernel>=6.2<6.6.135

Linux Linux kernel>=6.7<6.12.82

Linux Linux kernel>=6.13<6.18.23

Linux Linux kernel>=6.19<6.19.13

Linux Linux kernel=5.5

Linux Linux kernel=7.0-rc1

Linux Linux kernel=7.0-rc2

Linux Linux kernel=7.0-rc3

Linux Linux kernel=7.0-rc4

Linux Linux kernel=7.0-rc5

Linux Linux kernel=7.0-rc6

Linux Linux kernel=7.0-rc7

debian/linux

6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.137.1-1
Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.14-1
Upgrade
Upgrade Linux kernel drm/i915 to a version that resolves this vulnerability.
Patch 13238dc0ee4f9ab8dafa2cca7295736191ae2f42

Event History

Apr 24, 2026

CVE Published

via MITRE·02:45 PM

Data Sourced

via MITRE·02:45 PM

DescriptionSeverity

Data Sourced

via NVD·03:16 PM

RemedyDescriptionSeverityWeaknessAffected Software

Apr 26, 2026

Data Sourced

via Microsoft·08:10 AM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

What is the severity of CVE-2026-31656?

CVE-2026-31656 is classified as a high-severity vulnerability affecting the Linux kernel's i915 DRM driver.

How do I fix CVE-2026-31656?

To fix CVE-2026-31656, update the Linux kernel to the latest version that includes the patch for this vulnerability.

What types of systems are affected by CVE-2026-31656?

CVE-2026-31656 affects systems running the Linux kernel with the i915 DRM driver.

What are the potential impacts of CVE-2026-31656?

The potential impacts of CVE-2026-31656 include system crashes or exploitation leading to unauthorized access.

Is there a known exploit for CVE-2026-31656?

As of now, there are no publicly known exploits specifically targeting CVE-2026-31656.

CVE-2026-31656: drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2026-31656?

How do I fix CVE-2026-31656?

What types of systems are affected by CVE-2026-31656?

What are the potential impacts of CVE-2026-31656?

Is there a known exploit for CVE-2026-31656?

Company

Resources

Contact