CVE-2026-46229 (GCVE-0-2026-46229)
Vulnerability from cvelistv5 – Published: 2026-05-28 09:40 – Updated: 2026-06-14 18:04
VLAI
EPSS
VEX
Title
drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure
Summary
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.
Severity
5.5 (Medium)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 1db431380879fd9d28b763a88a0c0431be5be8df
(git)
Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 32b153658f017ad2f5bf8aab479e8d16ac95bc3a (git) Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 77d0b5d11387071770246fd0185a69fa28e8e109 (git) Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 047d44d8d29a6a1a5757256837aa9dd78e3cd0b5 (git) Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < ad52d61d82181dbdb7f05826de38352d5e550cc2 (git) |
guessed | |
| Linux | Linux |
Affected:
5.4
Unaffected: 0 , < 5.4 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.90 , ≤ 6.12.* (semver) Unaffected: 6.18.32 , ≤ 6.18.* (semver) Unaffected: 7.0.9 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
{
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"datePublished": "2026-05-28T09:40:51.300Z",
"dateReserved": "2026-05-13T15:03:33.106Z",
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"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46229.json",
"version": "3"
},
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-01T14:13:22+00:00",
"cve": "CVE-2026-46229",
"id": "CVE-2026-46229",
"initial_release_date": "2026-05-28T00:00:00+00:00",
"product_status:known_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46229.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-31T16:54:06Z",
"cve": "CVE-2026-46229",
"id": "CVE-2026-46229",
"initial_release_date": "2026-05-29T01:14:43Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "420",
"product_status:known_not_affected": "166",
"product_status:recommended": "446",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-46229",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46229.json",
"version": "13"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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