CVE-2026-46229 | drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure

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.

Published: 2026-05-28 Last update: 2026-05-28 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Conclusion & alert: CVE-2026-46229 is rated Low Risk (5.2/100): low exploitation likelihood (EPSS 0.02%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-46229

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 0.02%

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-46229

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-46229

GitHub Security Advisory for CVE-2026-46229

GHSA-w77m-3j47-48fr · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on...

OS Trackers for CVE-2026-46229

vendor priority summary link
debian not yet assigned CVE-2026-46229 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2026-46229
redhat https://access.redhat.com/security/cve/CVE-2026-46229
suse high CVE-2026-46229 severity important: SUSE including 20 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 99 product×package rows across 23 product lines (SUSE Linux Enterprise High Availability Extension 15 SP7, SUSE Linux Enterprise Live Patching 12 SP5, … (23 product lines)): Known Not Affected 99. https://www.suse.com/security/cve/CVE-2026-46229/

Affected software / configurations for CVE-2026-46229

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-46229

cvelogic Threat Intelligence