Vulnerability-Lookup

GHSA-H628-62X6-4JJJ

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC

The loop iterated only AMDGPU_MAX_MES_PIPES times, leaving entries uninitialized for multi-XCC GPUs. This causes null pointer dereferences when accessing arrays indexed by XCC ID >= 2. Extend the loop to cover all XCCs (AMDGPU_MAX_MES_PIPES * num_xcc), matching other per-XCC arrays.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93139"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC\n\nThe loop iterated only AMDGPU_MAX_MES_PIPES times, leaving entries\nuninitialized for multi-XCC GPUs. This causes null pointer dereferences\nwhen accessing arrays indexed by XCC ID \u003e= 2. Extend the loop to cover\nall XCCs (AMDGPU_MAX_MES_PIPES * num_xcc), matching other per-XCC\narrays.",
  "id": "GHSA-h628-62x6-4jjj",
  "modified": "2026-09-17T18:32:11Z",
  "published": "2026-09-17T18:32:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93139"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c256086a363f01f9840a57949506eccf5c990a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ff668cfc3960ed5b944ac35129f18a15ea08b74"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93139 (GCVE-0-2026-93139)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11

Title

drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC The loop iterated only AMDGPU_MAX_MES_PIPES times, leaving entries uninitialized for multi-XCC GPUs. This causes null pointer dereferences when accessing arrays indexed by XCC ID >= 2. Extend the loop to cover all XCCs (AMDGPU_MAX_MES_PIPES * num_xcc), matching other per-XCC arrays.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/7ff668cfc3960ed5b…
https://git.kernel.org/stable/c/2c256086a363f01f9…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a132fc9bc2f8b394a2f75947a0e1f5c22482a94c , < 7ff668cfc3960ed5b944ac35129f18a15ea08b74 (git) Affected: a132fc9bc2f8b394a2f75947a0e1f5c22482a94c , < 2c256086a363f01f9840a57949506eccf5c990a6 (git)
Linux	Linux	Affected: 7.2 Unaffected: 0 , < 7.2 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7ff668cfc3960ed5b944ac35129f18a15ea08b74",
              "status": "affected",
              "version": "a132fc9bc2f8b394a2f75947a0e1f5c22482a94c",
              "versionType": "git"
            },
            {
              "lessThan": "2c256086a363f01f9840a57949506eccf5c990a6",
              "status": "affected",
              "version": "a132fc9bc2f8b394a2f75947a0e1f5c22482a94c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.2"
            },
            {
              "lessThan": "7.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "7.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "7.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC\n\nThe loop iterated only AMDGPU_MAX_MES_PIPES times, leaving entries\nuninitialized for multi-XCC GPUs. This causes null pointer dereferences\nwhen accessing arrays indexed by XCC ID \u003e= 2. Extend the loop to cover\nall XCCs (AMDGPU_MAX_MES_PIPES * num_xcc), matching other per-XCC\narrays."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:39.448Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7ff668cfc3960ed5b944ac35129f18a15ea08b74"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c256086a363f01f9840a57949506eccf5c990a6"
        }
      ],
      "title": "drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC",
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        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93139",
    "datePublished": "2026-09-17T16:11:39.448Z",
    "dateReserved": "2026-09-17T16:02:15.088Z",
    "dateUpdated": "2026-09-17T16:11:39.448Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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