High

Linux i915 Gen12 GPU TLB Flush Stale Mapping Vulnerability

IdentifiersCVE-2022-4139CWE-672

CVE-2022-4139 is a flaw in the Linux kernel i915 graphics driver affecting specific GPU engine types on Intel Gen12 integrated and discrete GPUs. Incorrect GPU TLB-flush handling can leave stale GPU virtual-memory translations after memory has been unmapped or reassigned. The stale mappings may allow a GPU workload to access memory no longer assigned to its process. Affected platforms include Tiger Lake, Rocket Lake, Alder Lake, DG1, Raptor Lake, DG2, Arctic Sound, and Meteor Lake.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

A local malicious user able to execute GPU workloads may trigger random memory corruption or disclose data from memory reassigned to another process. Without an active IOMMU, stale translations may enable access to reassigned physical memory. With an active IOMMU, exploitation may remain possible if the attacker can create or reuse the necessary IOMMU mappings. Targeted access to a chosen memory location was not known to be achievable at disclosure.

Mitigation

If you can’t patch tonight, do this now.

Until patched kernels can be deployed, restrict local access to affected systems and prevent untrusted users, containers, or workloads from submitting GPU commands. Avoid assigning affected GPUs to untrusted tenants. Enable and correctly configure an IOMMU where supported, but do not treat it as a complete mitigation because relevant IOMMU mappings may still permit access.

Remediation

Patch, then assume compromise.

Update to a Linux kernel release containing the upstream i915 TLB-flush correction. For Red Hat systems, install the vendor kernel updates issued for affected RHEL 8, RHEL 9, applicable Extended Update Support releases, and Red Hat Virtualization 4 deployments. RHEL 7 is unaffected because it does not support the affected Gen12 GPU platforms.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

LinuxLinux Kerneloperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

15 SOURCESView more in app

redhat accessNews

Jan 1, 2026

RHSA-2023:0300 - Security Advisory - Red Hat Customer Portal

A Linux kernel i915 graphics-driver flaw in which an incorrect GPU TLB flush can cause random memory access.

redhat accessNews

Jan 1, 2026

RHSA-2023:0334 - Security Advisory - Red Hat Customer Portal

A Linux kernel i915 graphics-driver flaw in GPU TLB flushing that can result in random memory access.

redhat accessNews

Jan 1, 2026

RHSA-2023:0440 - Security Advisory - Red Hat Customer Portal

A Linux kernel i915 graphics-driver vulnerability in which an incorrect GPU TLB flush can result in random memory access.

redhat accessNews

Jan 1, 2026

RHSA-2023:0348 - Security Advisory - Red Hat Customer Portal

A Linux kernel i915 graphics-driver flaw in which an incorrect GPU TLB flush can cause random memory access.

+11 more in the timeline

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity