GHSA-HF6P-44H5-HP6X
Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:30In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: clamp the isolation index for rings outside a partition
adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing the array with it is out of bounds. SDMA submissions hit this on both the isolation enforcement and the VM flush path and trip UBSAN.
Fall back to the first slot the way the cleaner shader path already does, and stop taking the address before the ring type check that makes it relevant.
{
"affected": [],
"aliases": [
"CVE-2026-89814"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-16T11:16:46Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: clamp the isolation index for rings outside a partition\n\nadev-\u003eisolation[] has one slot per partition, but a ring that is not\nassigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing\nthe array with it is out of bounds. SDMA submissions hit this on both\nthe isolation enforcement and the VM flush path and trip UBSAN.\n\nFall back to the first slot the way the cleaner shader path already\ndoes, and stop taking the address before the ring type check that makes\nit relevant.",
"id": "GHSA-hf6p-44h5-hp6x",
"modified": "2026-09-16T15:30:58Z",
"published": "2026-09-16T12:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89814"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0bfb938182d1313e5cac32ae38dbaaa4eabe4af4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/964de255497ffd7cb8a86e405b8ac6d927e7e177"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b30900566642ceb2c9e12b56c2afec28d0fd91a0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.