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CVE-2026-46229

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_REL…

Published May 28, 2026EPSS 0.16%

Overview

CVE-2026-46229 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure

KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE

but not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated

VRAM with stale data from prior use observable by compute kernels.

The GEM ioctl path already sets VRAM_CLEARED for all userspace

allocations via amdgpu_gem_create_ioctl() and

amdgpu_mode_dumb_create(). The KFD path was missing this flag,

allowing stale page table remnants to leak into user buffers.

This causes crashes in RCCL P2P transport where non-zero data in

ptrExchange/head/tail fields corrupts the protocol handshake.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5Refgit.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8dfRefgit.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3aRefgit.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109Refgit.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46229?

CVE-2026-46229 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-46229?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46229?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-46229?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46229 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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